Physics, 03.02.2020 21:49 babyduck0664
Aplane mirror of circular shape with radius r=20cm is fixed to the ceiling. a bulb is to be placed on the axis of the mirror. a circular area of r=1m on the floor is to be illuminated after reflection of light from mirror. the height of the room is 3m. what is maximum distance from the centre of the mirror and the bulb so that the required area is illuminated?
Answers: 2
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Ablock having mass m slides down an inclined plane. the force of friction between the block and the inclined plane is f, the block's weight is m g, and the normal force is n. (a) draw a free – body force diagram showing the forces acting on the block. (b) write down all relevant newton’s equations for a given situation.
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Aplane mirror of circular shape with radius r=20cm is fixed to the ceiling. a bulb is to be placed o...
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