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GK QUESTION#3106

Statement I: The Hubble constant is used to describe the rate of expansion of the universe. Statement II: Planck’s constant is used to measure gravitational waves in space.

  1. ABoth statements I and II are correct
  2. BOnly statement I is correctCorrect answer
  3. COnly statement II is correct
  4. DBoth statements I and II are incorrect
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Answer

B. Only statement I is correct

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Explanation

The Hubble constant characterises the present expansion rate of the universe. Planck’s constant relates quantities such as photon energy and frequency; it is not the constant used to specify the measured strain of gravitational waves. Only Statement I is correct.

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