Physics-
General
Easy
Question
A particle revolves in clockwise direction (as seen from point A) in a circle C of radius 1 cm and completes one revolution in 2 sec. The axis of the circle and the principal axis of the mirror M coincide. Call it AB. The radius of curvature of the mirror is 21 cm. Then the direction of revolution (as seen from A) of the image of the particle and its speed is
- Clockwise, 1.57 cm/s
- Clockwise, 3.14 cm/s
- Anticlockwise, 1.57 cm/s
- Anticlockwise, 3.14 cm/s
The correct answer is: Clockwise, 1.57 cm/s
the image revolves in circle of radius 1/2 cm. Image of a radius is erect Þ Image will revolve in the same direction as the particle. The image will complete one revolution in the same time 2s.
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