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1
In the visible spectrum the colour having the shortest wavelength is ______________
Green
Red
Violet
Blue
2
The sky looks blue on a clear,sunny day because of ___________________.
Dispersion of light
Scattering of light
Reflection oflight
Refraction of light
3
When white light is incident on small suspended particles, more of the shorter wavelengths of _________________ get scattered. Very little of longer wavelengths of __________________ get scattered.
Blue light, Orange light
Red light, Violet light
Blue light, Red light
Red light, blue light
4
The color of light is related to its_____________________.
Frequency
Wavelength
Velocity
None of these
5
Blue color of sky is due to phenomenon of _______________.
Reflection
Refraction
Scattering
Dispersion
6
Which of the following options defines dispersion.
Avery unclear picture image of an object obtained on a plane mirror.
In a plane mirror our right appears to be image's left then this is dispersion.
Splitting of light into its constituent colours.
All the above
7
The sky appears blue because __________________
That is its natural color.
The earth's atmosphere emits blue light.
The air away from the sun cools downand turns blue.
The earth's atmosphere scatters more blue light than red.
8
The distance between two crests or trough of a wave is inversely proportional to the frequency of the wave is called as ___________________.
Amplitude
None of the above
9
Clouds look white because of ______________ by large drops of water in it.
Differection
10
The colour of scattered particles depends upon ______________.
Density of particle
Quality of particle
Size of particle