The colour of the sky opposite the sun is ____________
White
Yellow
Red
Blue
Dispersion of light by a glass prism takes place because
The light of different colours have different intensities
The light of different colours have different speeds in a medium
The light of different colours have different frequencies
The light of different colours have different energies
The subjective property of light related to its wavelength is
Speed
Frequency
Colour
None of these
The region beyond the violet end of the spectrum is __________
Ultraviolet
Infrared
Microwaves
X-rays
When a white light ray falls on a prism, the ray at its first surface suffers.
No refraction
Only dispersion
Only deviation
Both deviation and dispersion
Which of the following has the highest penetrating power?
X - rays
Radio waves
Gamma rays
Infrared radiations
The sky at noon appears ___________
Black
In white light of sun, maximum scattering by the air molecules present in the earth's atmosphere for
Red colour
Yellow colour
Green colour
Blue colour
The range of wavelength of the electromagnetic waves visible to us is ____________
4000 Ao to 8000 Ao
2000Ao to 4000Ao
100Ao to 4000Ao
0.1Ao to 100Ao
In glass, when wavelength of light increases then speed of light _________
Decreases
Increases
Remains constant
