Light And Optics - SS1 Physics Past Questions and Answers - page 1
1
Which of the following is NOT a portion of the electromagnetic spectrum?
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A
Radio waves
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B
Sound waves
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C
Gamma rays
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D
Visible light
2
Light is a form of energy that travels in:
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A
Particles
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B
Waves
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C
Both particles and waves
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D
Neither particles nor waves
3
The speed of light in a vacuum is approximately:
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A
300,000 meters per second
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B
150,000 meters per second
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C
30,000 meters per second
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D
3,000 meters per second
4
Which of the following colours of light has the shortest wavelength?
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A
Red
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B
Yellow
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C
Green
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D
Violet
5
When light passes from one medium to another and changes direction, it is called:
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A
Reflection
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B
Refraction
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C
Diffraction
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D
Absorption
6
The bending of light waves around obstacles or through small openings is known as:
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A
Reflection
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B
Refraction
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C
Diffraction
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D
Absorption
7
The phenomenon of light bouncing off a surface is called:
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A
Reflection
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B
Refraction
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C
Diffraction
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D
Absorption
8
The range of wavelengths of visible light is approximately:
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A
400 to 700 nanometres
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B
500 to 900 millimetres
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C
50 to 60 kilometres
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D
56 to 125 metres
9
The colour of an object that we see is determined by:
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A
The wavelength of the light it reflects
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B
The temperature of the object
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C
The intensity of the light it emits
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D
The speed of the light it absorbs
10
Which of the following phenomena is responsible for the formation of rainbows?
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A
Reflection
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B
Refraction
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C
Diffraction
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D
Interference
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