The Earths surface receives maximum energy at 12 noon but the maximum temperature never occurs at 12 noon. State which of the following reasons are correct. 1. Transformation of solar energy into heat requires some time. 2. The loss of energy through long

examrobotsa's picture

Submitted by examrobotsa on

Q: 35 (NDA-I/2012)
The Earths surface receives maximum energy at 12 noon but the maximum temperature never occurs at 12 noon. State which of the following reasons are correct.
1. Transformation of solar energy into heat requires some time.
2. The loss of energy through long-wave radiations from the Earth’s surface exceeds the energy received from the Sun at 4:00 p.m.
3. Energy received by the Earth from solar radiations continues to exceed the energy lost by outgoing long-wave radiations from the Earth’s surface up to 4:00 p.m.
Select the correct answer using the code given below : Code:

question_subject: 

Geography

question_exam: 

NDA-I

stats: 

0,36,82,22,32,36,28

keywords: 

{'solar radiations': [0, 0, 0, 2], 'noon': [0, 0, 4, 2], 'solar energy': [6, 1, 0, 3], 'maximum energy': [0, 0, 1, 3], 'maximum temperature': [0, 0, 0, 1], 'sun': [3, 0, 0, 6], 'earths surface': [0, 0, 1, 0], 'wave radiations': [0, 0, 0, 1], 'energy': [0, 0, 1, 2], 'earth': [0, 1, 1, 1], 'heat': [10, 3, 13, 46]}

The correct answer is option 3: 1 and 3 only.

Explanation:

1. Transformation of solar energy into heat requires some time: This statement is correct. When sunlight reaches the Earth`s surface, it is absorbed by various objects which then convert the solar energy into heat. This process takes some time, which is why the maximum temperature does not occur exactly at 12 noon.

2. The loss of energy through long-wave radiations from the Earth’s surface exceeds the energy received from the Sun at 4:00 p.m: This statement is incorrect. The question does not provide any information about the energy received from the Sun at 4:00 p.m. Therefore, we cannot conclude that the loss of energy through long-wave radiations exceeds the energy received at that time.

3. Energy received by the Earth from solar radiations continues to exceed the energy lost by outgoing long-wave radiations from the Earth’s surface up to 4:00 p.m: This statement is correct. The Earth receives energy from the Sun in the form of solar radiations. This energy is absorbed by the Earth`s surface and is released back into the atmosphere as long-wave radiations. Until 4:00 p.m., the energy received from the Sun continues to exceed