Light Mock Tests

53 questions available

Light Mock Test 1

Questions: 30

Light Mock Test 2

Questions: 23

Sample Questions

Class 8 Science

When light travels from air into a glass slab, what happens to its speed?

A It increases

B It decreases

C It remains the same

D It first increases then decreases

Class 8 Science

Which part of the eye controls the amount of light entering it?

A Retina

B Iris

C Cornea

D Ciliary factor

Class 7 Science

Which type of mirror is used by dentists to see an enlarged image of a tooth?

A Plane mirror

B Convex mirror

C Concave mirror

D Any mirror

Class 8 Science

Stores and shops use convex mirrors as security mirrors because convex mirrors:

A Produce a magnified image

B Provide a wider field of view

C Produce a real image

D Are cheaper than plane mirrors

Class 7 Science

A convex lens is thicker at the ___ and thinner at the ___.

A Centre, edges

B Edges, centre

C Top, bottom

D Bottom, top

Class 8 Science

Concave mirrors are used in all of the following EXCEPT:

A Torches

B Solar furnaces

C Rear-view mirrors on vehicles

D Shaving mirrors

Class 7 Science

A concave mirror can produce which type of images?

A Only real images

B Only virtual images

C Both real and virtual images

D Neither real nor virtual images

Class 7 Science

The image formed by a plane mirror is always:

A Real and erect

B Virtual and erect

C Real and inverted

D Virtual and inverted

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