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a bulb is kept burning just right above ...

a bulb is kept burning just right above the following solids. Name the shape of the shadows obtained in each case. Attempt to give a rough sketch of the shadow.

Text Solution

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The correct Answer is:
A ball : a circle,
A cylindrical pipe : a rectangle .
A book : a rectangle .
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Knowledge Check

  • Passage - IV : A solid sphere is kept over a smooth surface. It is hit by a cue at 'h' height above the centre ''C'', with same force, for different values of h in terms of R. In the surface is rough then after hitting the sphere, the case in which, friction is in forward direction, in above question is

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