A radiation x is focused by a proper device on the bulb of a thermometer. Mercury in the thermometer shows a rapid increase. The radiation x is ___________
Infrared radiation
Visible light
Ultraviolet radiation
X-rays
The colour of the sky opposite the sun is ____________
White
Yellow
Red
Blue
Which of the following are not the factors on which the deviation produced by a prism depends ?
The angle of incidence at the first surface
The angle of prism
The angle of refraction at second surface
The refractive index of the material of the prism
When see from the moon, the sky will appear _______ in colour.
Black
When sunlight enters the earth's atmosphere which colour of light is scattered the least?
Red light
Blue light
Green light
Violet light
How would the sky appear when seen from the space?
The sky at noon appears ___________
Which of the following is correct
λ blue > λ yellow > λ green
λ yellow > λ green > λ blue
λ yellow > λblue > λgreen
λgreen > λ blue > λ yellow
_________ are used for photography in fog
X-ray
Radio waves
Infrared radiations
Which colour of white light travels fastest in glass?
Violet
Green
