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?

While releasing the arrow from a stretched bow, the PE of the bow is converted into?

When a compressed slinky is released it converts potential energy into

Consider a hypothetical planet whose mass and radius are both half that of Earth. If g is the acceleration due to gravity on the surface of Earth, the acceleration due to gravity on the planet will be

What is the reason for formation of Mirage in desert?

The phenomenon of change in direction of light when it passes from one medium to another is called

What will be the value of the kinetic energy (Ek) of a moving body with mass m, if its speed is doubled from v to 2v?

What is the effective resistance (in Ω) of two resistors 12 Ω and 24 Ω connected in parallel?