Which of the following statements about light and its behaviour are correct?

1. The critical angle for total internal reflection decreases with an increase in the refractive index of the medium.
2. The focal length of a concave mirror is positive, while that of a convex mirror is negative.
3. When light passes from a denser medium to a rarer medium, it bends towards the normal.

What is the condition for constructive interference of light waves?

The reflection on a bathroom mirror, the lake, and the glare on a pair of glasses are caused by which type of reflection?

Which of the following angles are equal in case of a plane mirror?
I. Angle of incidence
II. Angle of refraction
III. Angle of reflection

The critical angle for total internal reflection is maximum for-

Which of the following is an electromagnetic wave?

When a wave encounters a boundary between two different media, the ratio of the reflected wave intensity to the incident wave intensity depends on:

The twinkling of stars at night happens due to -

White light is an example of which of the following?

If the refractive index of a medium is 1.2, what is the speed of light in that medium?

Which of the following options are examples of Total Internal Reflection?

A. Mirage

B. Optical Fibre

C. Mirror

According to the 'Law of Reflection, ' the angle of incidence is _______ the angle of reflection.

Which of the following is not an example of Total Internal Reflection?