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Q.Consider the following statements: 
  1. Earth receives long wavelength solar rays and radiates short wavelengths.
  2. Radio waves transmitted from the earth are reflected back to the earth by the Ionosphere.
Which of the above statements is/are correct?

  1. 1 only 

  2. 2 only

  3. Both 1 and 2

  4. Neither 1 nor 2


Solution

The correct option is B
2 only
Explanation:

Statement 1 is incorrect: Earth receives short-wavelength solar rays and radiates long wavelengths.

Statement 2 is correct: Radio waves transmitted from the earth are reflected back to the earth by the Ionosphere.

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