Tag: physics

Questions Related to physics

Which of the following devices does not make use of solar energy directly?

physics towards green energy non-conventional sources of energy electric energy generation and environment renewable and non-renewable energy

  1. Solar panels

  2. Solar furnaces

  3. Solar cells

  4. Dry cells

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Correct Option: D
Explanation:

Other than dry cells, i.e., the battery cells, all the three devices have been invented to make use of solar energy.

Find the odd one out.

Coal, Petroleum, Natural Gas, Nuclear power.

physics towards green energy non-conventional sources of energy electric energy generation and environment renewable and non-renewable energy

  1. Coal

  2. Petroleum

  3. Natural gas

  4. Nuclear power

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Correct Option: D
Explanation:

Coal, petroleum and natural gas are conventional source of energy. Nuclear power is a non-conventional source of energy.

What type of energy is described from heated ground water?

physics towards green energy non-conventional sources of energy electric energy generation and environment renewable and non-renewable energy

  1. Hydroelectric

  2. Nuclear

  3. Solar

  4. Geothermal

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Correct Option: D
Explanation:

Geothermal energy is described from heated ground water.

Common source of energy used for cooking in rural parts of India is:

physics towards green energy non-conventional sources of energy electric energy generation and environment renewable and non-renewable energy

  1. Sun

  2. Coal

  3. Wood and animal dung

  4. None of the above 

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Correct Option: C
Explanation:

Wood and animal dung are major source of energy for cooking in rural areas. It is readily available and is cheap form of energy, while solar energy is not abundantly used because its difficult to harness solar energy and coal is not cost efficient.

Geothermal energy can be best described as:

physics towards green energy non-conventional sources of energy electric energy generation and environment renewable and non-renewable energy

  1. light energy from Sun.

  2. heat energy from rocks inside Earth's surface. 

  3. heat energy from temperature difference in tides.

  4. heat energy from combustion of minerals.

Show answer
Correct Option: B
Explanation:

Geothermal energy is heat from within the Earth. The core and lower part of mantle generates large amount of heat. Deep, super heated water present, can be pumped to surface and used to produce electricity.

Define renewable sources of energy.

physics towards green energy non-conventional sources of energy electric energy generation and environment renewable and non-renewable energy

  1. A source whose energy supplied can be renewed is called renewable source of energy.

  2. A source of energy which will exhaust in future is called renewable source of energy.

  3. A natural source providing us energy which takes long time to replenish.

  4. A source of energy which causes environmental pollution is called renewable source of energy.

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Correct Option: A
Explanation:

A natural source of energy that can provide us energy continuously without being exhausted is called a renewable source of energy.

Which of the following is not ultimately derived from the Sun's energy?

physics towards green energy non-conventional sources of energy electric energy generation and environment renewable and non-renewable energy

  1. geothermal energy

  2. wind energy

  3. nuclear energy

  4. bio-mass.

Show answer
Correct Option: C
Explanation:

All the sources of energy are directly or indirectly derived from the ultimate source of energy. i.e. Sun, except for the nuclear energy. Nuclear energy is derived from the molecules of the radioactive elements.

State whether the given statement is True or False :
Solar panel can be set up in remote and inaccessible hamlets or very sparsely inhabited areas. 
physics towards green energy non-conventional sources of energy electric energy generation and environment renewable and non-renewable energy

  1. True

  2. False

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Correct Option: A
Generation of non-conventional energy produces air pollution. 
physics towards green energy non-conventional sources of energy electric energy generation and environment renewable and non-renewable energy

  1. True

  2. False

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Correct Option: A
Explanation:

Generation of conventional sources of energy produces environmental threat and air pollution. Generation of non-convention sources of energy is a pollution free process.

Of the following, renewable source of energy is

physics towards green energy non-conventional sources of energy electric energy generation and environment renewable and non-renewable energy

  1. Wood

  2. Petroleum

  3. Natural gas

  4. Uranium

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Correct Option: A