Two slits in Young’s experiment have widths in the ratio 1:25. The ratio of intensity at the maxima and minima in the interference pattern, Imax/Imin is
Options
(a) 121/49 (b) 49/121 (c) 04/09/18 […]
At the first minimum adjacent to the central maximum of a single-slit diffraction pattern, the phase difference between the Huygen’s wavelet from the edge of the slit and the wavelet from the midpoint of the […]
In a double slit experiment, the two slits are 1mm apart and the screen is placed 1 m away. A monochromatic light of wavelngth 500nm is used. What will be the width of each slit […]
For a parallel beam of monochromatic light of wavelength λ diffraction is produced by a single slit whose width a is of the order of the wavelength of the light. If D is the distance […]
A beam of light of λ=600 nm from a distant source falls on a single slit 1 mm wide and the resulting diffraction pattern is observed on a screen 2 m away. The distance between […]
A thin film of soap solution (n=1.4) lies on the top of a glass plate (n=1.5). When visible light is incident almost normal to the plate, two adjacent reflection maxima are observed at two wavelengths […]
In Young’s experiment, the third bright band for light of wavelength 6000Å coincides with the fourth bright band for another source of light in the same arrangement. Then the wavelength of second source is
An unpolarised beam of intensity I₀ falls on a polaroid. The intensity of the emergent light is
Options
(a) I₀/4 (b) zero (c) I₀/2 (d) I₀
Correct Answer:
I₀/2
Explanation:
When unpolarised beam […]
In Young’s double slit experiment, a third slit is made in between the double slits. Then
Options
(a) fringes of unequal width are formed (b) contrast between bright and dark fringes is reduced […]
If the ratio of amplitude of two superposed waves is 2:1, then the ratio of maximum intensity and minimum intensity is
Options
(a) (9:1) (b) (1:9) (c) (4:1) (d) (1:4)
Correct Answer:
(9:1)
Explanation: […]
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