Environmental Studies · Physics

Solar Radiation and Energy

876 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 physics solar equipment production of electricity from solar energy solar power alternate sources of energy solar power plant solar energy and its applications renewable and non-renewable resources renewable and non-renewable sources of energy generation of electricity

The cost of solar cells is

  1. decreasing exponentially

  2. decreasing slowly

  3. constant

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

The cost of solar cells is reducing exponentially.

Multiple choice physics solar equipment production of electricity from solar energy solar power alternate sources of energy solar power plant solar energy and its applications renewable and non-renewable resources renewable and non-renewable sources of energy generation of electricity

The reflector on top of solar cooker is used to:

  1. diverge solar energy

  2. focus solar energy

  3. focus light energy

  4. reflect excess energy to surroundings
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The reflector on the top of the solar cooker is used to focus the solar energy over the glass surface. The mirror reflects the heat energy in a confined area and increases the net input energy to the solar cooker.

Multiple choice physics solar equipment production of electricity from solar energy solar power alternate sources of energy solar power plant solar energy and its applications renewable and non-renewable resources renewable and non-renewable sources of energy generation of electricity

The semiconductor panel on the front of a scientific calculator is

  1. Electric Cell

  2. Solar Cell

  3. Plane mirror

  4. Convex mirror
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Solar cells are fitted on a scientific calculator.

Multiple choice physics solar equipment production of electricity from solar energy solar power alternate sources of energy solar power plant solar energy and its applications renewable and non-renewable resources renewable and non-renewable sources of energy generation of electricity

Solar cell production is

  1. increasing slowly

  2. increasing exponentially

  3. constant

  4. decreasing
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Production of solar cells is increasing exponentially every year.

Multiple choice physics solar equipment production of electricity from solar energy solar power alternate sources of energy solar power plant solar energy and its applications renewable and non-renewable resources renewable and non-renewable sources of energy generation of electricity

What is the principle of working of solar cell

  1. photovoltaic effect

  2. green house effect

  3. Archimedes' principle

  4. Faraday's law
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Solar cell works on the principle of photovoltaic effect according to which free electrons are produced when light of certain wavelength is incident on semiconductors.

Multiple choice physics solar equipment production of electricity from solar energy solar power alternate sources of energy solar power plant solar energy and its applications renewable and non-renewable resources renewable and non-renewable sources of energy generation of electricity

The reflector on top of solar cooker is adjustable because of:

  1. revolution of Earth about Sun.

  2. rotation of Earth about Sun.

  3. atmospheric profile of gases.

  4. density variation in atmosphere.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Rotation of Earth about the Sun causes the position of Sun to change during the day. Hence, the mirror on the top of the solar cooker needs adjusting during the day to focus the rays in a small area.

Multiple choice physics solar equipment production of electricity from solar energy solar power alternate sources of energy solar power plant solar energy and its applications renewable and non-renewable resources renewable and non-renewable sources of energy generation of electricity

A solar cooker works on:

  1. electrical energy

  2. magnetic energy

  3. solar energy

  4. chemical energy
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Solar cooker is a device used to collect the solar energy in the form of heat.

Multiple choice physics solar equipment production of electricity from solar energy solar power alternate sources of energy solar power plant solar energy and its applications renewable and non-renewable resources renewable and non-renewable sources of energy generation of electricity

What is solar cooker?

  1. Device which uses energy of direct sunlight to cook food

  2. Device which uses energy of direct falling water to cook food

  3. Device which uses energy of direct wind to cook food

  4. Device which uses energy of direct thermal energy to cook food
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Solar cooker is a device that uses energy from the Sun directly to cook food or warm fluids.

Multiple choice physics solar equipment production of electricity from solar energy solar power alternate sources of energy solar power plant solar energy and its applications renewable and non-renewable resources renewable and non-renewable sources of energy generation of electricity

How heat is generated in solar cooker to cook food?

  1. Light reflected from plane mirror concentrates solar energy inside solar cooker

  2. Light refracted from plane mirror concentrates solar energy inside solar cooker

  3. Light deflected from plane mirror concentrates solar energy inside solar cooker

  4. none
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Concave or plain mirror are used on the top cover of the cooker. Light get reflected from these mirrors, these mirrors concentrates the light onto a point or a region where the food is kept to be cooked.

Multiple choice physics solar equipment production of electricity from solar energy solar power alternate sources of energy solar power plant solar energy and its applications renewable and non-renewable resources renewable and non-renewable sources of energy generation of electricity

A solar water heater cannot be used to get hot water on:

  1. a sunny day.

  2. a cloudy day.

  3. hot day.

  4. windy day.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Solar devices are dependent on the sunlight for the generation of electricity. For the solar device to work efficiently, sunlight with good intensity should be available. Sunlight is weak during cloudy and rainy days. 

Multiple choice physics solar equipment production of electricity from solar energy solar power alternate sources of energy solar power plant solar energy and its applications renewable and non-renewable resources renewable and non-renewable sources of energy generation of electricity

Which ones are uses of solar panels?

  1. used in satellites and mars probe

  2. used in traffic signals

  3. used in calculators and toys

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

Solar panels can be used in calculators and battery operated toys, in satellites and Mars probes to provide them with energy to function in outer space by using the Sun's rays, can be used in traffic signals etc.

Multiple choice physics solar equipment production of electricity from solar energy solar power alternate sources of energy solar power plant solar energy and its applications renewable and non-renewable resources renewable and non-renewable sources of energy generation of electricity

What is estimation of solar constant?

  1. 1.4 kW per square meter

  2. 1.4 W per square meter

  3. 1.6 kW per square meter

  4. 1.4 kW per square centimeter
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Solar constant is defined as the mean amount of the solar energy received by the Earth's atmosphere, per unit of the area, during the time when the Earth is at the mean distance from the Sun. Solar constant equals to 1388 watts per square meter.

Multiple choice physics solar equipment production of electricity from solar energy solar power alternate sources of energy solar power plant solar energy and its applications renewable and non-renewable resources renewable and non-renewable sources of energy generation of electricity

Which of the following element is used in making solar cells?

  1. Gold

  2. Carbon

  3. Silicon

  4. Silver
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Solar cells are devices that converts Sun's radiation energy into electricity. Solar cells contains a semiconductor. Silicon is a good semiconductor that can be used for the production of solar cells.

Multiple choice physics solar equipment production of electricity from solar energy solar power alternate sources of energy solar power plant solar energy and its applications renewable and non-renewable resources renewable and non-renewable sources of energy generation of electricity

A solar water heater cannot be used to get hot water on

  1. a sunny day

  2. a cloudy day

  3. a hot day

  4. a windy day
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A solar water heater cannot be used to get hot water on a cloudy day as there is no Sun which is necessary for the working of solar water heater.

Multiple choice physics solar equipment production of electricity from solar energy solar power alternate sources of energy solar power plant solar energy and its applications renewable and non-renewable resources renewable and non-renewable sources of energy generation of electricity

In parabolic solar cooker, the container of cooking is placed at the :

  1. Centre of curvature of mirror

  2. Focal point of the mirror

  3. Can be placed anywhere

  4. None of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

In parabolic solar cooker, the container of cooking is placed at the focal point of mirror so that all rays that are falling on solar cooker can converge to one point and produce large amount of heat energy.