When the object is moved slightly closer to a converging lens, the image may

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Important Questions on Light

EASY

7th Foundation

IMPORTANT

NSO Science Olympiad Workbook Grade 7>Chapter 14 - Light>EXERCISES>Q 7

A point object is placed in front of a plane mirror. If the object and the mirror start moving away from each other with speed

v

along a straight line, then speed of the image with respect to mirror is

EASY

7th Foundation

IMPORTANT

NSO Science Olympiad Workbook Grade 7>Chapter 14 - Light>EXERCISES>Q 8

Which of the following cases is/are possible for the convex lens?

Question Image

EASY

7th Foundation

IMPORTANT

NSO Science Olympiad Workbook Grade 7>Chapter 14 - Light>EXERCISES>Q 9

A bus driver is reversing his bus at a speed

8 {ms}^{- 1}

. The rear view mirror of a bus is a plane mirror. The driver sees in his rear view mirror the image of a car parked behind his bus. The speed at which the image of the car appears to approach the driver of car will be

EASY

7th Foundation

IMPORTANT

NSO Science Olympiad Workbook Grade 7>Chapter 14 - Light>EXERCISES>Q 10

Consider the following statements and select the correct option which correctly identifies true (T) or false (F).

(i) Concave mirror is used for side view mirror in vehicles.
(ii) The image formed by a plane mirror is upright.
(iii) When a person moves closer to a plane mirror, the size of his image in the mirror remains the same.
(iv) In the case of reflection, a virtual image of the object is formed on the same side as the object.