List of top Physics Questions on wave interference asked in BITSAT

A ray of light of intensity I is incident on a parallel glass slab at point A as shown in diagram. It undergoes partial reflection and refraction. At each reflection, 25% of incident energy is reflected. The rays AB and A'B' undergo interference. The ratio of Imax and Imin is: 

Calculate the wavelength of light used in an interference experiment from the following data: Fringe width = 0.03cm. Distance between the slits and eyepiece through which the interference pattern is observed is 1m. Distance between the images of the virtual source when a convex lens of focal length 16cm is used at a distance of 80cm from the eyepiece is 0.8cm.

There are two sources kept at distances 2λ. A large screen is perpendicular to the line joining the sources. Number of maxima on the screen in this case is (λ= wavelength of light) 

A ray of light of intensity I is incident on a parallel glass slab at point A as shown in the diagram. It undergoes partial reflection and refraction. At each reflection, 25% of incident energy is reflected. The rays AB and A'B' undergo interference. The ratio of Imax and Imin is: 

In Young’s double–slit experiment, the intensity of light at a point on the screen where the path difference is Kλ is K (λ being the wavelength). The intensity at a point where the path difference is λ/4 will be:

In Young's double-slit experiment, the 10th-order maximum is obtained at the point of observation in the interference pattern for \( \lambda = 7000 \, \text{Ã} \). If the source is replaced by another one of wavelength 5000 Å, then the order of maximum at the same point will be â

A mica slit of thickness t and refractive index \( \mu \) is introduced in the ray from the first source \( S_1 \). By how much distance of fringes pattern will be displaced?
A wave y=a(ω t-kx) on a string meets with another wave producing a node at x=0. Then the equation of the unknown wave is