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Consider the following two statements, one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : When lightning strikes, the sound is heard a little after the flash…

Question and options

Consider the following two statements, one is labelled as Assertion (A) and the other is labelled as Reason (R).

Assertion (A) :

When lightning strikes, the sound is heard a little after the flash is seen.

Reason (R):

The velocity of light is greater than that of the sound.

In the light of the given statements, choose the correct answer from the following options:
  1. Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of (A)
  2. Both Assertion (A) and Reason (R) are true but Reason (R) is NOT the correct explanation of (A)
  3. (A) is true but (R) is false
  4. (A) is false but (R) is true

Answer and explanation

Correct answer: A - Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of (A)
Light travels far faster than sound (about 3x10^8 m/s against about 340 m/s), so the flash is seen before the thunder is heard. Both A and R are true and R correctly explains A.

Practice for these exams

  • JIPMAT

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