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Physics quiz on basic concepts.

If physics is your favorite subject, then you must know the answer to these questions. (PART-3)


1.   When does the gravity be negative?

As when an object is thrown upward in the direction opposite to the earth the value of g is turned to be negative

2.   What is buoyancy?

The tendency of objects to float in a fluid, upthrust force exerted by the fluid on body opposite to gravity.

3.   In which mirror do we get virtual images?

    Plane mirror

4.   Why do the objects with different masses fall at the same time?

As the gravitational force depends on the masses of both objects, the force or pull of g will be greater on heavier mass and less on lighter mass and both would compensate each other.

5.   Difference between dispersion and scattering?

Dispersion is defined as the separation of white light into different colours when the light is passed through the prism.

The process in which light gets deflected by the tiny particles in the medium through which the light passes is called scattering.


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