Course Code
phy303


Question
An event in sapce-time I completely specifed by a vector in a four-dimensional space with coordinates(x,y,z,t). This type of vector is called ----

Answer
four-vector



Question
Amount by which measured time interval is greater than corresponding proper time interval is called

Answer
time dilation



Question
Lorentz transformation equation hold for

Answer
all velocities: realtivistic & non-relativistic



Question
The faster a space ship is flying, the shorter it will appear to people on board the ship

Answer
it is false



Question
The faster an object is moving in relation to an observer, the ---- it will appear to an observer

Answer
shorter



Question
If the mass of an object changes, what will also change

Answer
energy



Question
The basic process involved in the measurement of time is the meassurement of ---

Answer
simultaneity



Question
The laws that govern the behaviour of mechanical systems will always have the same form in all inertial frames of reference

Answer
true



Question
Frame of refernce which are in translational motion at constant velocity relative to each other are called

Answer
inertial frames of reference



Question
Every physical event occurs somewhere in space in a definite ----

Answer
time interval


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