Solar Energy

Q.

What is solar constant?

Q. What percentage of the Sun's total energy output is received by the Earth?

1. $0.00000005\%$
2. $0.00005\%$
3. $1\%$
4. $0.001\%$

Q.

What are some examples of household gases?

Q. Name some of the solar energy devices.

Q.

If you could use any source of energy for heating your food, which one would you use and why?

1. methane

2. natural gas

3. petrol

4. none

Q.

The ultimate source of our energy is

1. Sun

2. Plant

3. Electricity

4. Wind

Q.

A typical solar cell can produce about _______ electricity.

Q. The approximate value of the solar constant is?

1. $1.4kW/m^2$
2. $1.4kW/min$
3. $1.4kJ/m^2$
4. $1.4kW/mi{n}^2$

Q.

Why is the solar cooker box covered with a plane glass plate?

Q.

The radiations present in sunlight which make a solar cooker work are :
(a) visible light rays (b) ultraviolet rays (c) cosmic rays (d) infrared rays

Q.

If you could use any source of energy for heating your food, which one would you use and why? [3 MARKS]

Q.

Discuss two useful applications of the greenhouse effect.

Q.

If the solar constant is $1.4kW/m^2$, then the solar energy received by 1 $m^2$ area in one hour is :
(a) 5040 j (b) 504.0 kj (c) 5040 kj (d) 5.04 kj

Q.

Which of the following radiation gets deflected most in an electric or magnetic field?

1. $\alpha$- particles

2. $\beta$- particles

3. $\gamma$- radiation

4. x-rays

Q.

The value of solar constant is

1. $4.2kWm⁻²$

2. $1.2kWm⁻²$

3. $1.4kWm⁻²$

4. $9.8kWm⁻²$

Q. Name two sources of energy that you think are renewable. Give reason for your choice.

Q.

The approximate value of solar constant is ___.

1. $1.4kW/min$

2. $1.4kW/m^2$

3. $1.4kJ/m^2$

4. $1.4kW/mi{n}^2$

Q. Renewable resources and non-renewable resources.

Q. The fraction of sunlight that consists of infrared radiation is?

1. $\frac{1}{4}$
2. $\frac{2}{3}$
3. $\frac{1}{2}$
4. $\frac{1}{3}$

Q.

What is the primary source of energy for the chemical energy stored in fossil fuels?

Q. Solar energy is the energy obtained from the radiation of Sun.

1. Radiation of sun incident on earth’s surface
2. Solar rays reflected by moon towards earth

Q.

Solar radiation flux is usually measured with the help of one of the following instruments?

1. Anemometer

2. Pyranometer

3. Sunshine recorder

4. All of the above

Q. (a) What is solar constant ? What is the value of solar constant ?
(b) If the energy received by 5 $m^2$ area in 10 minutes is 4200 kj, calculate the value of solar constant.

Q. Read the following statements and identify the correct option.
Statement 1: Solar energy is a conventional form of energy.
Statement 2: Solar energy is a renewable form of energy.

1. Only statement​ 1 is correct.
2. Both statement​s are correct.
3. Both statement​s are wrong.
4. Only statement​ 2 is correct.

Q.

What are the elements used in the manufacture of solar cells?

1. silicon

2. Silver

3. Gold

4. Zinc

Q.

Estimated value of solar constant is______________

Q.

The type of radiation absorbed by $C{O}_2$ molecule in atmosphere are

1. X-rays

2. Gamma rays

3. Infra-red rays

4. UV-rays

Q. Why is solar energy considered a renewable energy source?

1. You can get money back from the government if you put solar panels on your house
2. Solar energy is cheaper than fossil fuels
3. The sun's energy will not run out for billions of years
4. Solar energy can be used to recharge batteries

Q.

The solar energy reaching unit area at outer edge of the earth's atmosphere exposed perpendicularly to the rays of the Sun at the average distance between the Sun and earth is known as

1. Solar constant

2. Solar heat capacity of earth

3. Greenhouse effect

4. Solar heating

Q.

Silver paste is used in the manufacturing of solar panels.

1. gold

2. copper