Q1 A unidirectional device (a device which permits the flow of electri current on when it is forward biased) is called

Q2 In a series RLC ac circuit, the voltage across the resistive element in with the current in the circiut.

Q3 A produces electromotive force when its junctions of two different metals are maintained at different temperatures.

Q4 A device which is used to compare the electromotive forces or the potetial differeces of two cells is called called

Q5 's law states that current flowing through a conductor is directly proportional to the potential difference across it, provided temperature and other physical conditions like pressure, shape and size remain the same.

Q6 A is a beam fixed horizontally at one end.

Q7 The maximum stress a material can sustain without undergoing permanent deformation is called the of the material.

Q8 Increasing the tension in a rope the fundamental frequency of the rope

Q9 The frequency of a wave is 2 Hz and there are 3 m between adjacent crests. A crest will travell through a distance of m in 2 s.

Q10 The point of maximum displacement in vibrating string fixed at both ends is called

Q11 A device which is used the type of wave that exist in a guitar string is called

Q12 The type of wave which exists in the string of a guitar when it is plucked is called wave

Q13 A wave which transports energy as it propagates in space is wave

Q14 In a coupled osccillator, there is periodic transfer between the individual oscillators

Q15 A short pendulum has a frequency of 2 Hz, its period is

Q16 In a oscillating system, the motion of the normal modes are simple harmonic

Q17 For small amplitudes, the restoring force of a mass - spring system is to its distance from the equilibrium position

Q18 A bar pendulum is a practical example of a pendulum

Q19 For small amplitudes, the period of a simple pendulum is proportional to the square root of the acceleration due to gravity

Q20 For small amplitudes, the period of a simple pendulum is to the square root of the length of the string

Q21 The relationship between the period and length of a simple pendulum is given as $T = Al^{n}$. The intercept on the vertical axis if lnT is plotted on the vertical axis and lnl on the horizontal axis is

Q22 An oscillating system left to itself loses energy due to resistive forces such as air resistance. Such a motion is said to be .

Q23 The time is the time interval between the input stimulus and its response.

Q24 The maximum displacement of an oscillating system from its equilibrium position is referred to as its

Q25 The inverse of the period of oscillation is the same as its

Q26 If n complete oscillations are made in t seconds, then the period T of oscillation is given as T= s.

Q27 In experiments involving oscillations, the number of complete oscllations per unit time is the of the oscillation

Q28 In general, a device used for measuring mass in the laboratory is called

Q29 In practical physics it advicable to display your obsevation data in an all-inclusive table known as table

Q30 A straight line joining most of the plotted points with the rest of the plotted points on either sides of the line is called line of

Q31 The slope of the tangent to a curve which is parallel to the horizontal axis of the graph is

Q32 The slope of a graph is obtained from a suitable of slope drawn on the graph

Q33 A quantity to be measured as value is independent of the process of measurement

Q34 An experiment which gives a straight line graph with positive intercepts on both axes of the graph has a slope

Q35 When writing the results of an experimental observation in terms of significant digits, all non-zero digits are

Q36 Given $$s = \frac{d}{sqrt{n}}$$, where d is the average deviation from the mean of the data distribution and n the number of observations, s represents

Q37 A wooden block is at the verge of sliding freely down a wooden inclined plane when the inclination is 20degrees. The coeficient of limiting friction is to 2 decimal places

Q38 A mass of 150g when hung on a spiral spring stretches it 40cm. Assuming the spring is Hookean, the period of oscillation of the mass when slightly displaced and released is to 2 decimal places

Q39 In an experiment,measurements of variables were repeated in order to minimise

Q40 The simple pendulum experiment is used to determine an inaccessible height H using the relation $$T=\pi\sqrt(\frac{(H-h)}{g}))$$, where h is the height of the bob from the floor.The inaccessible height is obtainable from the of the graph of $T^{2}$ plotted against h

Q41 The displacement s of a trolley as a funtion of time is given as $s+ds=0.63\pm0.02$ for $t+dt=1.71pm0.10$s.The error dv in the measurement of velocity v is to 2 decimal places.

Q42 The precision index for the set of data 3.69,3.67,3.68,3.69,3.68,3.69,3.66,3.67 is to 3 decimal places

Q43 Errors that might result in measured values which are consistently too high or too low are called errors

Q44 The sum of the measurements 2.11m, 2.1546m and 2.125m may be rounded off as

Q45 The product of two measurements 1.23cm and 2.3cm should be rounded off as .

Q46 In recording measured values, a digit is significant if and only if it affects the of the measurement

Q47 A number N is writen as $$N=Ax10^{p}$S, where A is a number between 1 and 10 and p is an integer. In this form N is said to be expressed in

Q48 is the more accurate between the measurements 40.0 cm and 8.0 cm of length

Q49 A smaller measurement is more for the same accuracy

Q50 The maximum possible error in the measurement of length using the metre scale is _.

Q51 The junction potential differences and resistancesof a transitor circuit cuold be measured with a ----------
ordinary voltmeter
ammeter
multimeter
galvamometer

Q52 The slope of of the graph of a common emitter output characteristic gives the
input resistance
input gain
input admittance
ouput admittance

Q53 The diode is generally use for -------------------------
amplification
voltage regulation
rectification
coupling of amplifiers

Q54 The output admittance of a common emitter configuration is --------------
$$\frac{\Delta{V_{CE}}}{\Delta{I_{C}}}$$
$$\frac{\Delta{I_{C}}}{\Delta{V_{CE}}}$$
$$\frac{\Deta{I_{B}}}{\Delta{V_{BE}}}$
$$\frac{\Deta{V_{BE}}}{\Delta{I_{B}}}$$

Q55 In a common emitter configuration, the output characteristic is obtained by plotting------------
$I_{B}$ against $V_{CE}$ with $I_{B}$ as parameter
$I_{B}$ against $V_{EB}$ with $V_{CE}$ as parameter
$I_{C}$ against $V_{CE}$ with $I_{B}$ as parameter
$I_{C}$ against $V_{CB}$ with $I_{B}$ as parameter

Q56 Which of the following is NOT transistor characteristics which can be plotted?
input characteristic
output characteristic
transfer characteristic
signal amplification characteristic

Q57 The amplification property of a transistor is achieved through ----------------
transfer of signal input from low to high impedance path
forward bias of the collector-base junction of the common emitter configuration
connecting transistors back-to-back
the use of diode

Q58 The figure shows a ------------------------ configuration
common emitter, pnp
common base, pnp
common collector, npn
common base, npn

Q59 A transistor labelled BC107 is --------------
germanium transistor
silicon transistor for audio-frequency application
germanium transistor for audio-frequency application
silicon rectifier diode

Q60 The circuit symbol shown is -----------
Zener diode
thermistor
pnp transistor
npn transistor

Q61 A bipolar junction transistor has --------- terminals
2
3
4
5

Q62 The term "forward bais" refers to
the connection of the p-type to n-type
the connection of the positive terminal of the battery to the n-type material of a diode
the connection of the negative terminal of a battery to the n-type material of a diode
The connection of the diode and the battery in parallel

Q63 The figure shown is the circuit symbol of ------
transistor
thermistor
Zener diode
light emitting diode

Q64 Which of the following is correct?
a p-type material may be formed by doping a pure semiconductor with antimony
an n-type material may be formed by doping a pur semiconductor with indium
a p-type material may be formed by doping a pure semiconductor material with a trivalent element
an n-type material may be formed by doping a pure semiconductor with a trivalent element

Q65 Which of the following is NOT correct?
In practice a pn junction is formed by doping the same semiconductor crystal with an acceptor and a donor impurities side by side
a pn juction is a unidirectional conducting device
the Zener diod is used for voltage regulation
a diode must be heated to higher temperature for it to conduct

Q66 Which of the following is correct?
conductivity of a metal increases with increase in temperature
A p-type material is produced doping a semiconductor material with a donor atom
An n-type material is produced by doping a semiconductor material with a donor atom
conductivity of an insulator increases with increase in temperature

Q67 On the basis of their electrical conductivity, materials can be classified as follows EXCEPT
conductor
insulator
semiconductor
polymer

Q68 A sinusoidal supply of frequency 100 Hz and r.m.s. voltage 12 V is connected to a $$2.2\mu{F}$$ capacitor. What is the th r.m.s. value of the current?
$$5.5\mu{A}$$
$$26 \mu{A}$$
2.6 mA
17 mA

Q69 What is the inductive reactance of of a d.c.?
0
1
3
4

Q70 Under what condition does an LRC circuit behave as a pur resistive circircuit?
$|X_{L}|=|X_{C}|$
$|X_{L}|=|\frac{1}{X_{C}}|$
$|X_{L}| <|X_{C}|$
$|X_{L}|>|X_{C}|$

Q71 A spring oscillates with a period of 1 s with a mass of 0.25 kg. What would its period be if the mass were increased to 1 kg?
0.5 s
1 s
2 s
4 s

Q72 Increasing which of the following decreases the period of a mass on a spring?
mass
amplitude
spring constant
strength of gravity

Q73 Increasing which of the following increases the period of a mass on a spring?
mass
amplitude
spring constant
strength of gravity

Q74 If a mass on the end of a spring takes 3 s to complete one cycle, its frequency is
3 s
1/3 s
3 Hz
1/3 Hz

Q75 For small amplitudes the restoring force on a mass on a spring is ------- its distance from the equilibrium position
proportional to
proportional to the square of
proportional to the square-root of
inversely proportional to

Q76 In an experiment involving the vertical oscillation of a spring-mass system carrying different loads, the formula connecting the period of oscillation T, the mass M and the stiffness k was given as $$T=2\pi\sqrt{\frac{M+m}{k}}$$, where, m is the effective mass. If $$T^{2}$$ was plotted on the ordinate against $$M$$ on the abscissa, then the slope of the graph was found to be equal to
$$\frac{k}{4\pi^{2}m}$$
$$\frac{k}{4\pi^{2}}$$
$$\frac{4\pi^{2}}{k}$$
$$\frac{4\pi^{2}m}{k}$$

Q77 Which of the following is correct about the stationary waves in the figure shown?
$$L=\lambda$$
$$L=\frac{1}{2}\lambda$$
$$L=2\lambda$$
$$L=\frac{2}{3}\lambda$$

Q78 In an experiment involving the vertical oscillation of a spring-mass system carrying different loads, the formula connecting the period of oscillation T, the mass M and the stiffness k was given as $$T=2\pi\sqrt{\frac{M+m}{k}}$$, where, m is the effective mass. If $$T^{2}$$ was plotted on the ordinate against $$M$$ on the abscissa, then the effective mass was found to be
the slope of the graph
the inverse of the slope of the graph
the intercept on $$T^{2}$$-axis
the inverse of the ontercept on $$T^{2}$$-axis

Q79 The relationship between the period and length of a simple pendulum is given as $$T = Al^{n}$$. What would be the intercept on the vertical axis if lnT is plotted on the vertical axis and lnl on the horizontal axis?
lnl
lnA
nlnl
nlnT

Q80 Which of the following is CORRECT?
The period of a simple pendulum increases with decrease in its length
The period of a simple pendulum remains unchanged with decrease in its length
The period of a simple pendulum increases with increase in its length
The period of a simple pendulum decreases with increase in its length

Q81 In an experiment, 20 complete oscillations were made in 14 .3 seconds. Determine the value of the square of the period, $$T^2$$
0.511
1.430
2.044
4.890

Q82 The slope of the graph of $$T{^2}$$ plotted on the vertical axis against l on the horizontal axis is used to determine the value of -----------
frequency
period
phase
acceleration due to gravity

Q83 One of the precuations in experiments involving the determination of the period of oscillation of simple pendulum given here is NOT correct
prevent draught
read values with the eye placed vertically above scale marks
start the stop watch simultaneously with the begining of the oscillation
use small angular displacements from equilibrium position

Q84 In an experiment to determine the acceleration due to gravity g, $$T^{2}$$ was plotted on the vertical axis and l on horizontal axis. The value of g is obtainable from -----------
intercept on $$T^2$$-axis
intercept on l-axis
inverse of the ratio $$T^2/l$$
slope of the graph

Q85 From the graph, calculate the acceleration of the motion investigated in the experiment
$$0.25ms^{-2}$$
$$0.20ms^{-2}$$
$$1.5ms^{-2}$$
$$0.0ms^{-2}$$

Q86 From the graph, determine the intercept on the v-axis
$$0.3ms^{-1}$$
$$0.0ms^{-1}$$
$$1.5ms^{-1}$$
$$0.1ms^{-1}$$

Q87 From the graph, determine the time for which the velocity is $$1.5 ms^{-1}$$
6.2s
1.5s
3.2s
0.0s

Q88 In an experiment involving a simple elecrical circuit, the current in a resistor is measured as $$(2.50 \pm{ 0.05}) mA$$. The resistor is marked as having a value of $$4.7\Omega\pm 2%$$. If these values are used to calculate the power dissipated in the resistor, calculate the percentage error in the value obtained.
2%
4%
5%
6%

Q89 Which of the following is an appropriate unit of measurement of distance between two cities?
mm
cm
m
km

Q90 Calculate the precision index in the following set of experimental data: 3.21, 3.23, 3.20, 3.24, 3.22
0.06
0.005
0.012
0.02

Q91 Which of the following may NOT be classified as systematic error?
error which affect the results of experimental observation in a regular way
zero error of an instrument
error in measurement of time made with a clock running slowly
error which results in different values of magnitudes and or signs when repeated measurements are made

Q92 Add the following and round of your sum according to appropriate rule: 2.135 + 2.53 + 1.02
5.69
5.7
5.6
45.689

Q93 Divide 2.1 by1.54 and round of your result in accordance with appropriate rules
1.4
1.36
1.364
1.3636

Q94 Calculate the relative error in the measurement recorded as 0.05m, which is made with an instrument whose unit of measurement is 0.01m
.0001
0.001
0.01
0.1

Q95 What is the possible error in the measurement of length recorded as 0.5m, which is made with an instrument whose unit of measurement is 0.1m?
0.0005
0.005
0.05
0.5

Q96 An experimental observation was written down in terms of scientific notation as A $$\times 10^{n}$$, where n is an integer. The value of A must ---------
lie between 1 and 10
be greater than 10
be less than zero
be zero

Q97 Write down the precision in the measurement of time reported as 27s?
0.1s
0.1
1s
1

Q98 What is the relative error in the measrement of time reported as 72.3s?
0.1
0.005
0.0007
0.001

Q99 Which of the following is INCORRECT?
measurement of length reported as 3.2cm is more accurate than that repoted as 98.6cm
measurement of length reported as 98.6cm is more accurate than that repoted as 98.6cm
measurement of length reported as 3.25cm is more precise than that repoted as 3.2cm
the possible error in the measurement of lengths reported as 3.25cm and 3.2cm is 0.05cm

Q100 The maximum possible error in a measurement is ----------
1/2 of the smallest scale division of the instrument used
the same as the smallest scale division of the instrument
twice the smallest scale division of the instrument used
zero