Structure of light Questions

Important Question

1. The amount of detail observed by microscope is not improved by increase in magnifying power because it is strictly limited by __

  • a) Electricity voltage
  • b) Amount of light
  • c) Structure of light
  • d) All of the above

2. According to _ theory light is transmitted from luminous body to eye.

  • a) Photon
  • b) Light
  • c) Wave
  • d) All of the above

3. Many individual bodies/particles; that make light are called __

  • a) Electrons
  • b) Protons
  • c) Neutrons
  • d) Photons

4. What is the correct velocity of light transmission?

  • a) 1,86,300 miles/second
  • b) 1,86,300 km/second
  • c) 1,86,300 meter/second
  • d) 1,86,300 nautical miles/second

5. What is the range of wavelength of light (visible) rays?

  • a) 3850 to 7600 Å
  • b) 3850 to 7600 nm
  • c) 3600 to 8850 Å
  • d) 3600 to 7850 nm

6. Which of the following sentence is not correct for light?

  • a) The light rays are made up of photons
  • b) Wavelength of visible rays falls in the range of 385 to 760 nm
  • c) The velocity of light is about 1,86,300 kilometer/second
  • d) The vibrations of the ether are transverse to the direction of propagation of the wave motion

7. Light rays with wavelength range between 1000 to 3850 Å are known as_______

  • a) Infrared
  • b) Visible
  • c) Ultraviolet
  • d) X-ray

8. Light rays with wavelength 7600Å and above are called_______

  • a) Visible
  • b) Infrared
  • c) Ultraviolet
  • d) Gamma rays

9. Which of the following color has shortest wavelength?

  • a) Red
  • b) Green
  • c) Violet
  • d) Blue

10. Which of the following color has longest wavelength?

  • a) Orange
  • b) Red
  • c) Violet
  • d) Indigo

11. In color spectrum violet color has _ wavelength and_ energy

  • a) Shortest, highest
  • b) Longest, highest
  • c) Shortest, lowest
  • d) Longest, lowest

12. Identify the correct sequence of color spectrum from highest wavelength to lowest wavelength.

  • a) Violet, indigo, blue, green, yellow, orange, red
  • b) Red, orange, yellow, green, blue, indigo, violet
  • c) Violet, green, blue, yellow, indigo, orange, red
  • d) Red, blue, indigo, violet, orange, yellow, green

13. What do you mean by 1 Å?

  • a) 10-10meter
  • b) 10-8 cm
  • c) 10-7mm
  • d) All of the above

14. 1 meter is equals to.

  • a) 1010 Å
  • b) 109 nm
  • c) 106 µm
  • d) All of the above

15. 1 Å is equals to:

  • a) 1/10,000,000 mm
  • b) 1/25,00,00,000 inches
  • c) Both of the above
  • d) None of the above

16. How visible light rays are roughly divided into 3 portions? Choose correct option.

  • a) Red from 4000 to 5000 Å, green from 5000 to 6000 Å, Blue-violet from 6000 to 7000 Å
  • b) Blue-violet from 4000 to 5000 Å, green from 5000 to 6000 Å, red from 6000 to 7000 Å
  • c) Green from 4000 to 5000 Å, b lue-violet from 5000 to 6000 Å, red from 6000 to 7000 Å
  • d) Blue-violet from 4000 to 5000 Å, red from 5000 to 6000 Å, green from 6000 to 7000 Å

Answer

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