Answer Posted / srujan
In a homogenous transparent medium light travels in a
straight line and this is known as rectilinear propagation
of light. This can be demonstrated by the following
experiment:
Take three cardboards A, B and C and make a pinhole at
their centres. Place a burning candle on one side of the
cardboard A and arrange the cardboards in such a way that
the three pinholes and the candle flame are in a straight
line. The candle flame will be visible through the pinhole
of the cardboard C.
Now slightly displace any one of the cardboards and try to
see the flame through the pinhole of the cardboard C. The
flame will not be visible. From this it is clear that light
travels in a straight line.
| Is This Answer Correct ? | 56 Yes | 36 No |
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