problem 1: What will be the consequence on interference fringes in Young’s double slit experiment if:
a) Monochromatic source is substituted by white light.
b) Screen is moved away from the slit.
Justify your answer.
problem 2: Name one of the devices for generating polarized light. Two polarides are [laced perpendicular to one other and the transmitted intensity is zero. What happens when one more Polaroid is placed between such two at an angle of 450?
problem 3: In Young’s experiment the width of the fringes obtained with light of wavelength 6000 A0 is 2 mm. Determine the fringe width if the apparatus is immersed in a liquid of refractive index 4/3?
problem 4: State that the maximum intensity in interference pattern is four times the intensity due to each and every slit.
problem 5: In a single slit diffraction experiment, the width of the slit is made double the original width. How does this influence the size and intensity of the central diffraction band?
problem 6: How does the resolving power of a microscope change on:
a) Reducing the wavelength of light.
b) Reducing the diameter of the objective lens.
problem 7: Draw the wave front for a beam of light:
a) Coming from a convex lens when a point source is placed at its focus.
b) Divergent radially from a point source.
problem 8: The refractive index of a denser medium is 1.732. Compute:
a) Polarizing angle of the medium
b) Angle of refraction.
problem 9: Find out the angular separation between the central maximum and first order maximum of diffraction pattern due to the single slit of width 0.25 mm.
problem 10: State the two conditions for sustained interference of light. Draw the variation of intensity with position in Young’s double slit experiment.