Electric Current Through Conductors — Physics STD 11 Science — Question

Define strain.

Is it possible to add two velocities using triangle law?

Define
Triple point

State, whether all constants are dimensionless or unitless.

When released from certain height why do objects tend to fall vertically downwards?

What does the term frame of reference mean?

What type of wave is a sound wave?

According to Newton’s third law of motion for every action there is equal and opposite reaction, why two equal and opposite forces don’t cancel each other?

State principle of homogeneity of dimensions.

State the conditions under which Hooke’s law holds good.