In a certain region A to B in a thin film,we get 10 fringes with lith of wavelendth `4,125 overset@A`.HOw many fringes will be obeserved in the same region with waveength `5,893 overset @A`?

In Yound's double slit experiment,wer get 15 fringes per cm on the screen,while using light of wavelength 5,600 overset @A (sodium lamp).How many fringes per cm we get with ligth of wavelength 7,000 overset@A ?

The fringe width in a Young's double slit inter pattern is 2.4 xx 10^(-4)m ,when a red ligth of wavelength 6,400 overset @A is used.By how much will it change,if blue ligth of wavelength 4,000 overset@A is used?

The fringe width in a Young.s double slit interference pattern is 2.4 xx 10^(-4) m, when red light of wavelength 6400 overset@A is used. By how much will it change,if blue light of wavelength 4000 overset@A is used?

In Young's double slit experiment ,the central bright fringe produced by ligth of wavelength 5,600 overset@A shifts to the position of 5th brigth fringe,when thin transparent film of refractive index 1.28 is introduced in the path of light from one of two slits.Find the thickness of te film.

White light may be considred to have lambda from 4000 overset @A to 7500 overset @A .If an oil film has thickness 10^(-4) cm, deduce the wavelength in the visible region for which the reflection along the normal direction will be Weak Take mu of the oil as 1.4.

Monochromatic ligth of wavelgth 6,000 overset @A is used in a Young's double slit experiment.One of the slits is covered by a transparent film of thickness 1.2 xx 10^(-5) m having refractive index 1.4.How many fringes will shift due to the introduction of the film?

Figure 10.24 (a) shows a thin liquid film supporting a small weight = 4.5xx 10^-2 N. What is the weight supported by a film of the same liquid at the same temperature in Fig. (b) and (c) ? Explain your answer physically: