Historiand And Their Sources

Coherent Sources

Coherent Source

In Young's doube slit experiment, what is the effect of following operations on interference fringes : (i) The screen is moved away from the plane of the slits. (ii) The monochromatic source is replaced by another monochromatic source of smaller wavelength. (iii) The monochromatic source is replaced by a source of white light. (iv) The width of the source slit is made wider (v) The separation between the two slits is increased. (vi) The distance between the source slit and the plane of the two slits is increased. (vii) The width of each of the two slits is of the order of wavelength of light source.

What is a source of energy ? What are the two main categories of the sources of energy ?

At a finite distance from the source, a point source of light produces

Bacteria that use light for their energy source and CO_(2) for their carbon source are called

Differentiate between point sources and non-point sources of water pollution.

The two coherent sources of monochromatic light of wavelength lambda are located at a separation lambda . The two sources are placed on a horizontal line and screen is placed perpendicular to the line joining the sources. Find position of the farthest minima from the centre of the sources.