Light

Which of these is not a property of light?

• Dispersion

• Malleability

• Refraction

• Diffusion

Specular reflection takes place on smooth and polished surface.

• False

• True

When a light ray is incident normally on a plane mirror surface, the angle of incidence is ____

• 0°

• 30°

• 90°

• 180°

If the angle between the mirror and the incident ray is 60°, the angle of reflection is ___.

• 30°

• 45°

• 60°

• 90°

Virtual Image can be formed by

• Concave Mirror

• Convex Mirror

• Plane Mirror

• All of the above

A boy is standing at a distance of 4m in front of the mirror. He moves 2m towards the mirror. In which direction will the image move-towards the mirror or away from it?

• The image moves 2m away from the mirror

• The image moves 2m towards the mirror

• The image moves 4m away from the mirror

• The image moves 4m towards the mirror

How many images are formed when two plane mirrors are facing each other?

• 0

• 5

• 10

• Infinite

When white light splits in seven colors, the phenomenon is called spectrum. 

• True

• False

Whose function is to darken the inside of the eye and prevent internal reflection?

• Pupil

• Cornea

• Choroid

• Sclera

What is the length of Human eye?

• 1.5 cm

• 2.5 cm

• 3.5 cm

• 4.5 cm