The ratio of the refractive index of red light to blue light in air is ____.
less than unity
equal to unity
greater than unity
less as well as greater than unity depending upon the experimental arrangement
The refractive index of a piece of transparent quartz is the greatest for ____.
red light
violet light
green light
yellow light
When light travels from one medium to the other of which the refractive index is different, then which of the following will change?
Frequency, wavelength and velocity
Frequency and wavelength
Frequency and velocity
Wavelength and velocity
A beam of light is converging towards a point on a screen. A plane glass plate whose thickness in the direction of the beam = , refractive index = , is introduced in the path of the beam. The convergence point is shifted by ____.
The length of the optical path of two media in contact of length and of refractive indices and respectively, is ____.
If represents refractive index when a light ray goes from medium i to medium j, then the product is equal to ____.
Ray optics fails when ____.
the size of the obstacle is 5 cm
the size of the obstacle is 3 cm
the size of the obstacle is less than the wavelength of light
Both A and B
A ray of light traveling inside a rectangular glass block of refractive index is incident on the glass–air surface at an angle of incidence of 45°. The refractive index of air is 1. Under these conditions the ray ____.
will emerge into the air without any deviation
is reflected back into the glass
is absorbed
will emerge into the air with an angle of refraction equal to 90°
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