Wave Optics Tes...

The inability of a lens to bring all the rays coming from a point object to focus at one single point is called

Light is a form of _______ that we can detect with our ________ .

In an astronomical microscope, the focal length of the objective is made :

Assertion: Thin films such a soap bubble or a thin layer of oil on water show beautiful colours when illuminated by white light.
Reason: It happens due to the interference of light reflected from the upper surface of the thin film.

The path difference produced by two waves is $$3.75\mu m$$ and the wavelength is $$5000  \mathring { A } $$. The point is

If the apertature of a telescope is decreased the resolving power will

The wave theory of light, in its original form, was first postulated by.

Light travels in a ________ path

A light wave is incident normally over a slit of width $$24\times {10}^{-5}cm$$. The angular position of second dark fringe from the central maxima is $${30}^{o}$$. What is wavelength of light?

Wavefront of a wave has direction with wave motion