If the radius of the earth is reduced to half of its present value, with no change in the mass, how will the acceleration due to gravity, be affected?

Assertion (A): Liquefied cryogenic gases are sprayed on electric cables in big cities.

Reason(R): Liquefied cryogenic gases prevent wastage of power.

The acceleration due to gravity on the surface of the earth will be maximum at ________ and minimum at _________

Selvi placed her purse on the passenger’s seat of her car when she drove to work.

By the time she reached her office, her purse had fallen on the floor in front of the passenger’s seat. Why did this happen? Explain.

Why does a fielder in the game of cricket pull his hands back when he catches a ball?