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A small object at P oscillates infront of a concave mirror as shown in the figure perpendicular to principal axis according to equation. y=4 ( t+ 3 ) c ~cm y is the displacement of particle perpendicular to principal axis. The amplitude (in cm ) of image is

Correct answer

2

Step-by-step solution

1 v + 1 u = 1 f aligned & 1 v - 1 (3 R / 2) =- 2 R & 1 v =- 2 R + 2 3 R =- 4 3 R & v=- 3 R 4 & m=- v u =- (- 3 R 4 ) (- 3 R 2 ) =- 2 4 =- 1 2 & amplitude of image =4 (- 1 2 )=2 aligned

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