SawaalBoxसवाल बॉक्स
2003 · Q63Science & TechnologyPhysicseasy

Which one of the following statements is correct?

  1. (a)The velocity of sound in air increases with the increase of temperature
  2. (b)The velocity of sound in air is independent of pressure
  3. (c)The velocity of sound in air decreases as the humidity increases
  4. (d)The velocity of sound in air is not affected by the change in amplitude and frequency
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Official answer(c) The velocity of sound in air decreases as the humidity increases

2015 · Q30Science & TechnologyPhysicsmoderate

In the context of modern scientific research, consider the following statements about ‘IceCube’, a particle detector located at South Pole, which was recently in the news : 1. It is the world’s largest neutrino detector, encompassing a cubic kilometre of ice. 2. It is a powerful telescope to search for dark matter. 3. It is buried deep in the ice. Which of the statements given above is/are correct?

  1. (a)1 only
  2. (b)2 and 3 only
  3. (c)1 and 3 only
  4. (d)1, 2 and 3
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Official answer(d) 1, 2 and 3