What is normal shift?Explain.Obtain he expression for normal shift .Indicate,how this helps to determine refractie index of a medium.

What is an unpolarised ligth ?Explain with the help of a suitable ray diagram,how an unpolarised light can be polarised by reflection from a transparent medium.Write the expression for Brewster angle in terms of the refractive index of the denser medium.

What is meant by lateral shift ?Explain for a given slab,what is the quantity that determines lateral shift?Obtain the expression for lateral shift for refracion throug a parallel sided glasss slab.

What are the factors on which the normal shift depends?

A circular coil of N turns and radius R is kept normal to the magnetic field given by B = B_0 cos omegat . Deduce an expression for e.m.f. induced in the coil. State the rule which helps to detect the direction of induced current.

What is meant by term modulation? Explain with the help of a block diagram. How the process of modulation is carried out in radio boadcast?

The Young's double-slit experiment is done in a medium of refractive index 4//3. A light of 600 nm wavelength is falling on the slits having 0.45 mm separation. The lower shift S_(2) is covered by a thin glass sheet of refractive index. 1.5. The interference pattern is observed on a screen placed 1.5 m from the slits as shown in Figure a. Find the location of central maximum (bright fringe with zero path difference) on the y-axis.

What is regulation of gene expression? Explain with the help of the lac operon of E.Coli.