Embibe Experts Solutions for Exercise 3: Assignment

Rainbows are classic example of the phenomenon of

A compound microscope has an objective of focal length $2 \mathrm{cm}$ and an eye-piece of focal length $5 \mathrm{cm}.$ An object is placed at a distance $2.4 \mathrm{cm}$ in front of objective lens. If final image forms at infinity then magnifying power and corresponding tube length of microscope are respectively

A double convex lens of refractive index $\frac{3}{2}$ has radii of $30 \mathrm{cm}.$ Incident rays of light parallel to principal axis will come to converge at a distance from the lens is

The colour which scattered most in atmosphere is

If the angle of refraction is half of the angle of incidence in a medium of refractive index $\mu$ relative to first medium, then the angle of incidence is

For magnification equal to one, the distance of a real object from the pole of a concave mirror of focal length $10 \mathrm{cm}$ should be

For a real object which of the following can produce a virtual image ?

A beam of monochromatic light of wavelength $3900 \stackrel{\mathrm{o}}{\mathrm{A}}$ in air travels into glass of refractive index $\frac{3}{2}.$ Its wavelength in glass will be