8 standard light

A smooth shining surface, which rebounds the light back in same or in different direction, is called

• Mirror

• Incident ray

• Lens

• Idealisation

Front balged part of the eyeball is called

• PUPIL

• CORNEA

• RETINA

• IRIS

The splitting of white light into its seven constituent colours is called

• refraction

• dispersion

• deviation

• reflection

The iris is the coloured part of the eye

• true

• false

What makes objects visible ?

• the absorption of light by objects

• the reflected light from the object

• the total internal reflection taking place in an object

If the angle of incidence of light falling on a plane mirror is 30°, what will be the angle of reflection?

• 60°

• 30°

• 55°

• 40°

When we stand in front of our dressing table, our left hand seems to be right and right seems to be left. This is called

• mirage

• Up -side down phenomenon

• Left-right confusion

• Lateral inversion

Angle of incidence is always

• equal to angle of reflection

• equal to angle of refraction

• more than angle of reflection

• less than refraction

The angle of reflection is equal to the angle of incidence.

• sometimes

• always

• never

• under special case

If you are standing 2m away from a plane mirror the distance between you and your image are

• 2m

• 4m

• 6m

• 8m