Q10 of 13 Page 189

Which type of lens forms always a virtual image?

A virtual image is formed by a concave lens. A concave lens forms a virtual, erect and diminished image i.e. smaller in size as that of object.


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8

Give one use each of a concave and a convex mirror.

 9

Which type of mirror can form a real image?

 11

Choose the correct option in question

A virtual image larger than the object can be produced by a


i. concave lens ii. concave mirror


iii. convex mirror iv. Plane mirror.

 12

Choose the correct option in question

David is observing his image in a plane mirror. The distance between the mirror and his image is 4m. If he moves 1m towards the mirrors, then the distance between David and his image will be


i. 3m ii. 5m


iii. 6m iv. 8m