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Two waves A and B have wavelength 0.01 Å and 9000 Å respectively. a. Name the two waves. b. Compare the speeds of these waves when they travel in vacuum.

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Question

Two waves A and B have wavelength 0.01 Å and 9000 Å respectively.

  1. Name the two waves.
  2. Compare the speeds of these waves when they travel in vacuum.
One Line Answer
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Solution

  1. A - gamma rays, B - infrared radiation.
  2. The ratio of the speeds of these waves in a vacuum is 1:1, as all electromagnetic waves travel at the speed of light in a vacuum.
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Chapter 6: Spectrum - EXERCISE - 6 (B) [Page 144]

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Selina Concise Physics [English] Class 10 ICSE
Chapter 6 Spectrum
EXERCISE - 6 (B) | Q 17. | Page 144

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