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 geography environmental changes elements of weather and climate : temperature process of heat transfer in the atmosphere environmental regions (zones)

In which type of farming, roof is made of either glass or cloth to allow the sun rays to penetrate and sustain the heat inside the building?

  1. Organic farming

  2. Greenhouse farming

  3. Inorganic farming

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

In greenhouse farming, the roof is made of either glasses or cloth to allow the sun rays to penetrate and sustain the heart of the building. In this method of farming the dependency on climate reduces. Mainly flower, vegetable, fruits are grown in greenhouse farming.  Some crops also are grown in this method.  With increasing technology greenhouse farming also increasing day by day. 

Multiple choice physics observing space: telescopes maxwell's equations the nature of light introduction to electromagnetic waves

Which of the following is an electromagnetic waves that cause sunburn?

  1. ultraviolet

  2. X-rays

  3. infrared

  4. microwaves

  5. gamma rays
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

UV waves are shorter than visible light waves, so UV possesses more energy than regular light.

UV photons have the right energies to cause chemical changes. When UV light hits your skin, the DNA in your skin cells can undergo chemical change. This chemical change is what sunburn is. In extreme cases, this change in DNA can result in cancer.

Multiple choice water and mineral resources in tamil nadu tamil nadu agriculture human geography in tamil nadu geography economics

Solar energy can be generated directly by using the _____ cells.

  1. Photochemical

  2. Photoconductive

  3. Photovoltaic

  4. Photodynamic
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
  • Photovoltaic thermal hybrid solar collector (PVT) are systems that convert solar radiation into thermal and electrical energy.
  • These systems combine a solar PV cell, which converts sunlight into electricity, with a solar thermal collector, which captures the remaining energy and removes waste heat from the PV module.
Multiple choice evs - ii our earth and our solar system solar system and sun planets and stars introduction to solar system planets sunita's experience in space space exploration

Which of the following statements is / are correct ?

  1. A solar panel is made by combining a large number of solar concentrators.

  2. To work properly, wind energy generators need wind speeds of at least about 15 km/h.

  3. Many of the sources ultimately derive their energy

  4. none

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

A solar concentrator uses lenses, called Fresnel lenses, which take a large area of sunlight and direct it towards a specific spot by bending the rays of light and focusing them. Some people use the same principle when they use a magnifying lens to focus the Sun's rays on a pile of kindling or paper to start fires.

Multiple choice physics scientists inventions and inventors in science indian scientist: biography and achievements scientist and their achievements

Which of the following is/are the source/s of ultraviolet radiations?

  1. The sun

  2. Electric arcs of mercury

  3. Discharges in hydrogen

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

Ultraviolet radiation is emitted by the sun, as well as by artificial sources like mercury vapor lamps and electric arcs used in industrial processes.

Multiple choice physics gravitation: planets and satellites weightlessness application of newton's law of motion escape velocity

Motion of artificial satellite around the earth is powered by :

  1. Liquid fuel

  2. Solar energy

  3. Atomic energy

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

Answer is D.

The orbit of an artificial earth satellite is an ellipse whose focus is at the center of the earth (in a particular case, a circle) and which maintains an unchanged position in space. Movement along such an orbit is called undisturbed motion and proceeds on the assumption that the earth attracts, according to Newtons law, like a sphere with spherical density distribution and that the satellite is affected only by the earths gravitational attraction.
Such factors as atmospheric drag, compression of the earth, solar radiation pressure, and the attraction of the moon and sun are the reasons for deviations from undisturbed motion. Because of atmospheric drag, satellites in orbits at altitudes of several hundred kilometers gradually descend and, entering the dense layers of the atmosphere at an altitude of 120130 km and lower, disintegrate and burn up; thus, they exist for a limited period.
Hence, the motion of artificial satellite around the earth is NOT powered by any of the options given.

Multiple choice evs - i substances, objects and energy renewable resources alternative fuels and energy sources alternative sources of energy conservation of fossil fuels

A solar cell converts:

  1. heat energy into electrical energy

  2. solar energy into electrical energy

  3. heat energy into light energy

  4. solar energy into light energy
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Solar-powered photovoltaic (PV) panels convert the sun's rays into electricity by exciting electrons in silicon cells using the photons of light from the sun. This electricity can then be used to supply renewable energy to your home or business. Light striking a silicon semiconductor causes electrons to flow, creating electricity. Solar power generating systems take advantage of this property to convert sunlight directly into electrical energy. 

Multiple choice evs - i substances, objects and energy renewable resources alternative fuels and energy sources alternative sources of energy conservation of fossil fuels

Plants store solar energy in the form of:

  1. electric energy

  2. thermal energy

  3. chemical energy

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

Plants trap the solar energy and convert it into chemical energy by the process of photosynthesis.This chemical energy in the form of carbohydrates or sugar is used as food.

Multiple choice botany ecosystem energy flow in food chain food chain and energy flow energy flow in ecosystem

Sun gives radiation in the form of

  1. Infra-red radiation

  2. Visible light

  3. Ultra-violet

  4. All the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
The radiation emitted from the sun is a mixture of three types of radiation:
  • Ultraviolet rays: UV rays have a wavelength of 0.01 - 10 nm. These rays can have adverse effects like sunburn, skin cancer if exposure occurs for a long period of time.
  • Visible light: Visible spectrum lies in the range of wavelength 400 - 700 nm. These rays are perceived by human eyes. A part of the visible spectrum is used by plants for photosynthesis.
  • Infrared rays: These rays have a wavelength beyond the visible spectrum. Most of the radiation emitted from the sun is in the form of infrared radiation.
Hence, all the options are correct.
So, the correct answer is 'All the above'.