Wave Optics Tes...

In double slit experiment, for light of which colour, the fringe width will be minimum?

The driver of a car traveling with speed 30 m/sec towards a hill sounds a horn of frequency 600 Hz. If the velocity of sound in air is 330 m/s, the frequency of reflected sound as heard by driver is :

A telescope has an objective lens of 10 cm diameter and is situated at a distance of one kilometer from two objects. The minimum distance between these two objects, which can be resolved by the telescope, when the mean wavelength of light is $$5000 \dot{A}$$, is of the order of :

Identify the correct statement from the following :

The wave front is a surface in which:

An astronomical telescope has a large aperture to

The phenomenon of interference is shown by

An astronomical telescope has on objective and an eyepiece of focal lengths $$10 cm$$ and $$1 cm$$ respectively. Find its tube length in normal adjustment.

Light is a form of .........

Magnification of an object ($$m$$), is equal to