Environmental Studies · Physics

Solar Radiation and Energy

926 Questions

Enhance your general science knowledge with these questions on solar radiation and energy. The topics span solar thermal power plants, photovoltaic devices, and the sun's energy output. This material is useful for environmental studies and physics.

Solar energy conversionSun luminosity and compositionAtmospheric reflectionSolar thermal technology

Solar Radiation and Energy Questions

Multiple choice

Why does sunflower turn towards sunlight?

  1. To save itself from enemies

  2. To make food

  3. To appear attractive

  4. To receive vitamin D

  5. To save its green leaves from sun rays

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Sunflower turns towards sunlight to make food.

Multiple choice

Consider the following statements regarding Solar Cells. (a) Solar cells are photodiodes with very large surface areas (b) Solar cells yield more power (c) A single solar cell may provide up to 0.5V that can supply 0.1A when exposed to bright light Which of the statements is/are true?

  1. Only (a) and (c)

  2. Only (a) and (b)

  3. Only (b) and (c)

  4. All of the above

  5. None of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Statement (a) is true. Solar cells are photodiodes with very large surface areas.Statement (b) is true. Solar cells yield more power. Statement (c) is true. A single solar cell may provide up to 0.5V that can supply 0.1A when exposed to bright light.

Multiple choice

Which of the following statements are correct?

  1. Solar power can be harnessed only if sun's rays are concentrated by using a series of mirrors.
  2. Solar energy can be tapped for generating electricity, heating homes, providing hot water, etc.
  3. Wind mills have been used by man for grinding food grains.
  4. Geothermal energy can be used for generation of electricity.

  1. Only 2 and 4

  2. Only 2, 3 and 4

  3. Only 1, 2 and 4

  4. All of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

All the above given statements are perfectly correct. Use of a series of mirrors is indispensable for harnessing solar power. Solar energy can be tapped for generating electricity, heating homes, providing hot water, etc. Wind mills have been used by man for grinding food grains. Geothermal energy can be used for generation of electricity.

Multiple choice

Directions: In following question, four statements are provided. These statements form a coherent paragraph when properly arranged. Select the alternative representing the proper and logical sequencing of these statements.

A. The sun is a great ball of hot gases.
B. It is distributed in layers. C. The hot gases are not actually gases but plasma. D. The layers are at different temperatures.

  1. ACBD

  2. CADB

  3. ADBC

  4. CDBA
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Answer is (1).

Multiple choice

Why is the efficiency of a solar heating device low?

  1. The sun’s energy is available in condensed form and there is no proper method to store this energy.

  2. The sun’s energy is available in gaseous form and there is no proper method to store this energy.

  3. The sun’s energy is available in diffused form and there is no proper method to store this energy.

  4. The sun’s energy is available in solid form and there is no proper method to store this energy.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The sun's energy is available in diffused form and there is no proper method to store this energy.

Multiple choice

What would you call that solar technology in which solar energy is converted to a more useful form of energy?

  1. Active Solar Technology

  2. Passive Solar Technology

  3. Mechanical Solar Technology

  4. Convertible Solar Technology
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Solar technologies are broadly characterized as either passive solar or active solar depending on the way they capture, convert and distribute solar energy. Active solar technologies are employed to convert solar energy into another more useful form of energy. This would normally be a conversion to heat or electrical energy.

Multiple choice

Why does sunflower turn towards sunlight?

  1. To save itself from predators

  2. To make food

  3. To appear attractive

  4. To receive vitamin D

  5. To save its green leaves from sun rays
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Sunflower turns towards sunlight to make food.