EASY
7th CBSE
IMPORTANT
Earn 100

A smooth polished surface which can return the rays of light into the same medium is called a

50% studentsanswered this correctly

Important Questions on Light

MEDIUM
7th CBSE
IMPORTANT
Frank Everyday Science>Chapter 15 - Light>Let's revise>Q A
The phenomenon of splitting white light into its seven constituent colours is called _____.
MEDIUM
7th CBSE
IMPORTANT
Frank Everyday Science>Chapter 15 - Light>Let's revise>Q A
If the speed of rotation of Newton’s colour disc is fast enough, the various colours would blend and produce
MEDIUM
7th CBSE
IMPORTANT
Frank Everyday Science>Chapter 15 - Light>Let's revise>Q A
A virtual image larger than the object can be produced by a
MEDIUM
7th CBSE
IMPORTANT
Frank Everyday Science>Chapter 15 - Light>Let's revise>Q B
The phenomenon of turning back of light into the same medium on striking a polished surface is called _____ of light. (reflection/ refraction/ diffraction)
MEDIUM
7th CBSE
IMPORTANT
Frank Everyday Science>Chapter 15 - Light>Let's revise>Q B
If an image cannot be taken on a screen, it must be a _____ image.
MEDIUM
7th CBSE
IMPORTANT
Frank Everyday Science>Chapter 15 - Light>Let's revise>Q B
In a spherical mirror, if the reflecting surface is on the outside, it is called a _____ (convex/ concave) mirror.
MEDIUM
7th CBSE
IMPORTANT
Frank Everyday Science>Chapter 15 - Light>Let's revise>Q B
A _____ (concave/convex) lens is thicker in the middle and thinner at the edges.
MEDIUM
7th CBSE
IMPORTANT
Frank Everyday Science>Chapter 15 - Light>Let's revise>Q B
A _____(convex/concave) mirror is used as a reflector in projectors.