A man sets his watch by the sound of a siren placed at a distance 1 km away- If the velocity of sound is 330 m - sA- His watch is set 3 sec- slowerB- His watch is set correctlyC- None of the aboveD- His watch is set 3 sec- faster

The correct option is A His watch is set 3 sec. slowerTime =Distance/Velocity=1000/330=3.03 sec. Sound will be heard after 3.03 sec. So his watch is set 3 sec ...

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Standard XII

Chemistry

Longest Chain Rule

A man sets hi...

Question

A man sets his watch by the sound of a siren placed at a distance 1 km away. If the velocity of sound is 330 m/s

His watch is set 3 sec. faster

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His watch is set 3 sec. slower

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His watch is set correctly

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None of the above

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Solution

The correct option is B His watch is set 3 sec. slower
$T i m e = \frac{D i s t a n c e}{V e l o c i t y} = \frac{1000}{330} = 3.03 s e c .$

Sound will be heard after 3.03 sec. So his watch is set 3 sec, slower.

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How is humour employed to comment on the pains that the author took to get his watch set right.

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A man sets his watch by the sound of a siren placed at a distance 1 km away. If the velocity of sound is 330 m/s

The correct option is B His watch is set 3 sec. slowerTime=DistanceVelocity=1000330=3.03 sec. Sound will be heard after 3.03 sec. So his watch is set 3 sec, slower.

The correct option is B His watch is set 3 sec. slower
$T i m e = \frac{D i s t a n c e}{V e l o c i t y} = \frac{1000}{330} = 3.03 s e c .$

Sound will be heard after 3.03 sec. So his watch is set 3 sec, slower.