science
Grade-7
Easy

Question

What decides the amount of bending of light towards or away from the normal?

  1. Refractive index
  2. Optical density of the mediums
  3. Different velocities of light in different mediums
  4. All of the above

hintHint:

It depends on numerous factors.

The correct answer is: All of the above


    The correct answer is d) all of the above.
    The mediums which have more refractive index bends light more towards the normal and vice versa.
    The refractive index depends on optical density. This means more the denser medium more will  be the refractive index and the light will bend more towards the normal and vice versa.
    The speed of light is different in different mediums. The speed depends on the refractive index.

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