Ray Optics Test...

When a ray of light is incident normally on one refracting surface of an equilateral prism (Refractive index of the material of the prism = 1.5)

Consider the following two statements A and B and identify the correct choice in the given answers
A :Line spectra is due to atoms in gaseous state
B : Band spectra is due to molecules

The angle of prism is 5° and its refractive indices for red and violet colours are 1.5 and 1.6 respectively. The angular dispersion produced by the prism is

If the refractive angles of two prisms made of crown glass are 10° and 20° respectively, then the ratio of their colour deviation powers will be

The nature of sun\'s spectrum is

For a prism of refractive index 1.732, the angle of minimum deviation is equal to the angle of the prism.The angle of the prism is

When a glass prism of refracting angle 60° is immersed in a liquid its angle of minimum deviation is 30°. The critical angle of glass with respect to the liquid medium is

Three prisms 1, 2 and 3 have the prism angle A = 60°, but their refractive indices are respectively 1.4, 1.5 and 1.6. If δ₁, δ₂, δ₃ be their respective angles of deviation then

In the visible region the dispersive powers and the mean angular deviations for crown and flint glass prisms are ω, ω\' and d, d\' respectively. The condition for getting deviation without dispersion when the two prisms are combined is

A ray of light passes through the equilateral prism such that angle of incidence is equal to the angle of emergence if the angle of incidence is 45°. The angle of deviation will be