Class 7 cbse light

Latha is observing her image in a plane mirror. The distance between the mirror and her image is 6 m. If she moves 2m towards the mirror then the distance between latha and her image will be

• 8 m

• 4 m

• 10 m

• 5 m

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

• 2m

• 4m

• 6m

• 8m

Angle between incident and reflected ray i.e. angle AOB is

• 30 degree

• 40 degree

• 120 degree

• 180 degree

Images that can't be captured on a screen are called

• Real image

• Virtual image

• Proper image

• Imaginary image

Convex lens is also called as

• Diverging lens

• Converging lens

• Plane lens

• Power lens

A refracting telescope uses a concave and a

• Concave mirror

• Convex lens

• Both a and c

• Convex mirror

What is the focal length of a plane mirror?

• 1

• 89

• Infinity

• Zero

Focus is situated behind the mirror of

• Concave mirror

• Convex mirror

• Both

• None

What kind of image formed by concave lens?

• Virtual

• Real

• Both

• None

As the distance of the object from the mirror increases the distance of the image also increases

• True

• False

• Both

• None