In figure, if a parallel beam of white l...

In figure, if a parallel beam of white light is incident on the plane of the slit, then the distance of the nearest white spot on the screen form O is [assume `d lt lt D, lambda lt lt D`]

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In the figure shown if a parallel beam of white light is incident on the plane of the slits then the distance of the white spot on the screen from O is [Assume lt lt D, lambda lt lt d ]

In the figure , if a parallel beam of white light is incident on the plane of the slits S_1 and S_2 then the distance of the nearest white spot on the screen from O is [ Assume D gtgtd, d gtgtlamda ]

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The refractive index of light in glass varies with its wavelength according to equation mu (lambda) = a+ (b)/(lambda^(2)) where a and b are positive constants. A nearly monochromatic parallel beam of light is incident on a thin convex lens as shown. The wavelength of incident light is lambda_(0) +-Delta lambda where Delta lambda lt lt lambda_(0) . The light gets focused on the principal axis of the lens over a region AB. If the focal length of the lens for a light of wavelength lambda_(0) is f_(0) , find the spread AB.

A parallel beam of light of wavelenght 600 nm is incident normally on a slit of width 'd' . If the distance between the slit and screen is 0.8 m and distance of 2nd order maximum from the centre of the screen is 15mm , calculate the width of the slit.

A parallel beam of light of wavelength 600 nm is incident normally on a slit of width d. If the distance between the slits and the screen is 0.8 m and the distance of 2^(nd) order maximum from the centre of the screen is 15 mm. The width of the slit is

Three narrow slits A, B and C are illuminated by a parallel beam of light of wavelength lambda , P is a point on the screen exactly in front of point A. Slit plane is at a distance D from the screen (D gtgt lambda) . It is know that "BP – AP ="(1)/(3) (a) Find d in terms of D and lambda (b) Write the phase difference between waves reaching at P from C and A. (c) If intensity of P due to any of the three slits individu- ally is I_(0) , find the resultant intensity at P.

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