The refraction of light is commonly known as
bending
scattering
reflection
interference
Rainbows are formed by
reflection and diffraction
refraction and scattering
dispersion and total internal reflection
interference only
Suppose a rocketship is receding from the earth at a speed of 2/10 th the velocity of light.A light in the rocketship appears blue to the passengers on the ship.What colour would it appear to an observer on the earth?
blue
orange
yellow
yellow - orange
Pick out the longest wavelength from the following types of radiations.
Blue light
Gamma rays
X-rays
Red light
The twinkling of stars is due to atmospheric :
reflection of light
dispersion of light
interference of light
refraction of light
The three primary or basic colours are
red, blue, yellow
yellow, green, orange
red, green, yellow
red, green, blue
The splitting of white light into its constituent colours is called
refraction
dispersion
deviation
diffraction
Who discovered by his experiments with glass prisms that white light consists of seven colours?
Newton
Brewster
Maxwell
Thomas young
Which colour is used in signal lamps?
red
Total internal reflection can take place when light travels from:
diamond to glass
water to glass
air to water
air to glass
