Consider the following statements: 1. Earth receives the Suns energy only at the infrared end of the spectrum 2. Earth reradiates the Suns heat only as ultraviolet energy. Which of the statements given above is/are correct.

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Q: 44 (IES/2016)
Consider the following statements:
1. Earth receives the Sun’s energy only at the infrared end of the spectrum
2. Earth reradiates the Sun’s heat only as ultraviolet energy.
Which of the statements given above is/are correct.

question_subject: 

Science

question_exam: 

IES

stats: 

0,82,44,13,8,23,82

keywords: 

{'ultraviolet energy': [0, 0, 1, 1], 'sun': [3, 0, 0, 6], 'spectrum': [0, 0, 1, 1], 'infrared end': [0, 0, 1, 1], 'heat': [10, 3, 13, 46], 'earth': [0, 1, 1, 1]}

The correct answer is option 4, neither 1 nor 2. Both statements 1 and 2 are incorrect.

Statement 1 states that Earth receives the Sun`s energy only at the infrared end of the spectrum. This is incorrect because Earth receives energy from the Sun across the entire electromagnetic spectrum, including visible light, infrared, and ultraviolet radiation.

Statement 2 states that Earth reradiates the Sun`s heat only as ultraviolet energy. This is also incorrect. Earth reradiates the Sun`s energy back into space as thermal infrared radiation, not ultraviolet energy.

Therefore, neither statement 1 nor 2 is correct. Earth receives solar energy across the entire spectrum, including visible light, and reradiates it as thermal infrared radiation.