Physics Questions

Motion of a train is an example of ______.

Upward force on a floating body is called _______.

If price of an article decreases from Rs 240 to Rs 220, when quantity demanded increases from 200 units to 210 units. Find point elasticity of demand?

Temperature of distant luminous bodies can be determined by

What is the minimum distance (in metres) required to hear an echo?

The least penetrating power ray is

The strength of a force is usually expressed by its __________.

Find the resistance (in mega Ω) of a wire of length 20m, cross sectional area 1 cm2 and made of a material of resistivity 200 Ωm.