A double slit experiment is performed with light of wavelength 500 nm. A thin film of thickness 2 μm and refractive index 1.5 is introduced in the path of the upper beam. The location of […]
In Young’s double slit experiment, the slit seperation is 1 mm and the screen is 1 m from the slit. For a monochromatic light of wavelength 500 nm, the distance of 3rd minima from the […]
As a result of interference of two coherent sources of light, energy is
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(a) Increased (b) Redistributed and the distribution does not vary with time (c) Decreased (d) Redistributed and the distribution […]
In an interference experiment, third bright fringe is obtained at a point on the screen with a light of 700 nm. What should be the wavelength of the light source in order to obtain 5th […]
When a beam of light is used to determine the position of an object, the maximum accuracy is achieved if the light is
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(a) Polarised (b) Of longer wavelength (c) Of shorter wavelength […]
A layer of colourless oil spreads on water surface. White light is incident on it and due to interference the oil appears coloured. In order to observe this effect the thickness of oil layer must […]
Two waves of same amplitude superpose. The resultant intensity is I₁ when they are coherent and I₂ when they are non-coherent. The ratio of I₁ and I₂ will be
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(a) (1:1) (b) […]
In Young’s double slit experiment, the intensity of light coming from the first slit is double the intensity from the second slit. The ratio of the maximum on the interference fringe pattern observed is
In Young’s double slit experiment, the wavelength of the light used is doubled and distance between two slits is made half of initial distance. The resultant fringe width becomes
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(a) 2 times […]
In Young’s double silt experiment if the distance between the two slits is made half, then the fringe width will become
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(a) Half (b) Double (c) One fourth (d) Unchanged
Correct Answer: […]
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