Wave Optics Set 1

In Young's double slit experiment, the separation between the slit and the screen increases. The fringe width

The line of singly ionized calcium has a wavelength of as measured on earth. In the spectrum of one of the observed galaxies, this spectral line is located at . The speed with which the galaxy is moving away from us, will be

Through which character we can distinguish the light waves from sound waves

In a Young's double slit experiment, the separation between the two slits is 0.9 mm and the fringes are observed 1 m away. If it produces the second dark fringes at a distance of 1 mm from the central fringe, the wavelength of the monochromatic source of light used is

In a Young's experiment, two coherent sources are placed 0.90 mm apart and the finges are observed one metre away. If it produces the second dark fringe at a distance of 1 mm from the central fringe, the wavelength of monochromatic light used would be

Consider the following statements A and B and identify the correct answer.
A. Fresnel’s diffraction pattern occurs when the source of light or the screen on which the diffraction pattern is seen or when both are at finite distance from the aperture.
B. Diffracted light can be used to estimate the helical structure of nucleic acids.

A single slit Fraunhoffer diffraction pattern is formed with white light. For what wavelength of light the third secondary maximum in the diffraction pattern coincides with the second secondary maximum in the pattern for red light of wavelength

Two parallel slits apart are illuminated by light source of wavelength . The distance between two consecutive dark fringes on a screen away from the slits is

Two polaroids are kept crossed to each other. Now one of them us rotated through an angle of . The percentage of incident light now transmitted through the system is

If a source of light is moving away from a stationary observer, then the frequency of light wave appears to change because of