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
| Answer | |||||||
| 1 | c | 5 | a | 9 | c | 13 | d |
| 2 | c | 6 | c | 10 | b | 14 | d |
| 3 | d | 7 | c | 11 | a | 15 | c |
| 4 | a | 8 | b | 12 | b | 16 | b |