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Class XII Physics Ray Optics 1

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Question 1

When a clock is viewed in a mirror, the needles exhibit a time which appears to be 8.20. Then the actual time will be -

Question 2

A ray of light making an angle 10 ° with the horizontal is incident on a plane mirror making a angle θwith the horizontal. What should be the value of θso that the reflected ray goes vertically upwards -

Question 3

Which of the following letters do not surface lateral inversion:

Question 4

When a small plane mirror is placed horizontally on level ground at a distance of 60 m from the foot of a tower, the top of the tower and its image in the mirror subtend an angle of 90 ° at the eye, where eyes is placed at the mirror itself. The height (in m) of the tower is:

Question 5

Two mirrors are inclined at an angle θ as shown in the figure. Light ray is incident parallel to one of the mirrors. The ray will start retracing its path after third reflection if–

Question 6

Two plane mirrors are parallel to each other and spaced 20 cm apart. An object is kept in between them at 15 cm from A. Out of the following at which point (s) image (s) is/are not formed in mirror A (distance measured from mirror A) –

Question 7

A point source has been placed as shown in the figure. What is the length on the screen that will receive reflected light from the mirror ?

Question 8

A person’s eye level is 1.5 m. He stands in front of 0.3 m long plane mirror which is 0.8m above the ground. The length of the image he sees of himself is –

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Sep 25NEET & AIIMS