wave-optics

Related Questions

• Out of the following statements which is not correct

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• Light of wavelength $\lambda$ = 5000 Å falls normally on a narrow slit. A screen placed at a distance of 1 m from the slit and perpendicular to the direction of light. The first minima of the diffraction pattern is situated at 5 mm from the centre of central maximum. The width of the slit is

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• A slit of width a is illuminated by white light. For red light ($\lambda$ = 6500 Å), the first minima is obtained at $ heta = {30^o}$. Then the value of a will be

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• A star emitting radiation at a wavelength of 5000 Å is approaching earth with a velocity of $1.5 \times {10^6}m/s$. The change in wavelength of the radiation as received on the earth, is

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• What causes changes in the colours of the soap or oil films for the given beam of light

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