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Sahil shone a torch and blew a horn at the same time, while standing at 15m distance from Amit. Amit will _______.
  • a)
    First hear the sound then see the light
  • b)
    First see the light then hear the sound
  • c)
    See the light and hear the sound at the same time
  • d)
    None of these
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
Sahil shone a torch and blew a horn at the same time, while standing a...
Sound waves travel slower than light waves thus, Amit will first see the light and then hear the sound.
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Most Upvoted Answer
Sahil shone a torch and blew a horn at the same time, while standing a...
Explanation:
When Sahil shone a torch and blew a horn at the same time, two things happened:
1. Light was produced due to the torch.
2. Sound was produced due to the horn.

The speed of light:
Light travels at a very high speed of approximately 3 x 10^8 m/s.

The speed of sound:
Sound travels at a much slower speed of approximately 340 m/s.

Distance between Sahil and Amit:
The distance between Sahil and Amit is 15 m.

Time taken for light to reach Amit:
Time taken for light to reach Amit = Distance/Speed
Time taken for light to reach Amit = 15/3 x 10^8
Time taken for light to reach Amit = 5 x 10^-8 seconds

Time taken for sound to reach Amit:
Time taken for sound to reach Amit = Distance/Speed
Time taken for sound to reach Amit = 15/340
Time taken for sound to reach Amit = 0.0441 seconds

The answer:
Since the speed of light is much greater than the speed of sound, Amit will see the light first before hearing the sound. Hence, the correct answer is option B - "First see the light then hear the sound".
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Sahil shone a torch and blew a horn at the same time, while standing at 15m distance from Amit. Amit will _______.a)First hear the sound then see the lightb)First see the light then hear the soundc)See the light and hear the sound at the same timed)None of theseCorrect answer is option 'B'. Can you explain this answer?
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