Question

a. if one of two identical slits producing interference in young's experiment is covered with glass so that the light intensity passing through it reduces to 50% find the ratio of the maximum and minimum intensity Of the fringe in the interference pattern. B) what kind of fringes do you expect to observe if white light is used instead of monochromatic light

Answer 1

LET PRINCIPAL BE RS X GIVEN, THE SUM BECOMES 6/5 OF ITSELF IN 4 YRS =>AMOUNT= RS (6X/5) TIME= 4 YRS AMOUNT= P+I =>INTEREST= AMOUNT-PRINCIPAL =>INTEREST=6X/5 - X = RS X/5 INTEREST=PRT/100 =>X/5=X*R*4/100 =>100X=20*R*X =>100=20R =>R=100/20= 5 SO THE RATE OF INTEREST IS 5% PA

Answer 2

a) Attached

b) Time varying fringe patters in which relative positions of fringes change with time because of the presence of various wavelengths in white light.