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The origin of x and y coordinates is the pole of a concave mirror of focal length 20cm. The x-axis is the optical axis with x>0 being the real side of mirror. A point object at the point (25cm, 1cm) is moving with a velocity 10cm/s in positive x-direction. The velocity of the image in cm/s is approximately

The origin of x and y coordinates is the pole of a concave mirror of focal length 20cm. The x-axis is the optical
axis with x>0 being the real side of mirror. A point object at the point (25cm, 1cm) is moving with a velocity
10cm/s in positive x-direction. The velocity of the image in cm/s is approximately

Grade:12

1 Answers

Ayush_Deep
120 Points
one year ago
The principal axis of mirror is along x - axis.
So , the x component of position of image will be 100 . 
The longitudinal magnification is( 100/25)² =16
So velocity of image will 160m/s 
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