If the velocity of a body becomes two times its initial velocity, its kinetic energy becomes n times its initial kinetic energy. What is the value of n?

Which of the following animals do NOT belong to the class of reptiles?

Two valves P and B can fill a sump in 37.5 minutes and 45 minutes respectively. Both valves are opened. The sump will be filled in just 30 minutes, if valve B is turned off after

How many times in a week does both the hands of the clock will coincide with each other?

An incident ray strikes a plane mirror at an angle of 20 deg with the mirror. The angle between the incident ray and reflected ray is ____.

Choose the correct figure that replaces the question mark.

Which of the following is a mixture?

Bootstrapping is also known as