Physics-
General
Easy
Question
A particle is moving in a circle in front of a plane mirror in the situation as shown in figure. The plane of motion of the particle is perpendicular to the plane of mirror. Then the motion of image of particle with respected to the particle is
- along a parabola
- oscillating normal to the mirror
- oscillating parallel to the mirror
- along a circle
The correct answer is: oscillating normal to the mirror
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A plane mirror ' M ' and a concave mirror ' X ' are kept at a separation of 40 an with their reflecting faces facing each other as shown in figure. An object AB is kept perpendicular to the principal axis in position (1). Considering successive reflections first at mirror ' X ' and then at ' M', a real image is formed in front of 'M at a normal distance 8 am form it. If the object is moved to new position (2), the real image is formed at 20 cm from ' M ' with the reflections as described earlier.
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The image formed by the top spherical portion of sphere is (as measured from top of spherical ball)
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