Physics Questions

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 object converts electricity to light?

If the acceleration due to gravity on the surface of earth is g, then the acceleration due to gravity on the surface of a planet whose mass is double that of earth and radius is same as that of earth is _________________.

Kinetic energy is equal to

Which among the following is not an environment friendly mode of producing electricity?

_______________ states that the ratio of the potential difference across a conductor to the current flowing through it, is a constant, provided that its physical conditions, such as temperature, remain constant.

The centre of the reflecting surface of a spherical mirror is a point called the ___.

Mirages are formed primarily due to ___ of light.