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The MCQs below are drawn from the Physics subject category.
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1371
In a certain region in a thin film 10 fringes are observed in the reflected beam of λ1 = 4200 A. How many fringes will be observed in the same region with λ2 = 6000 A?
For dark fringes the phase difference is (n + 1/2)π; the OCR shows this option marked.
1373
A beam of light consisting of two wavelengths 6500 Å and 5200 Å is used to obtain interference fringes in Young's double slit experiment. Suppose the mth bright fringe due to 6500 Å coincides with nth bright fringe due to 5200 Å at a minimum distance from the central maximum then-
Bragg's θ is the angle between the incident ray and the crystal planes (surface/plane); in this context it is commonly given as the angle with the crystal surface.
1375
In a Young's double slit experiment, the spacing between two slits is 0.1 mm. If the screen is kept at a distance of 1.0 meter from the slits and the wavelength of light is 5000 Å, the fringe width is given by
Newton's rings arise from interference between light reflected from the lower surface of a plano-convex lens and the upper surface of the flat glass plate, i.e., reflected light.
1378
A crucial experiment that led to the theory of relativity was performed by:
The Michelson–Morley experiment's null result for ether drift influenced the development of special relativity.
1379
Monochromatic light with a wavelength of 6.0 × 10⁻7 m falls upon two slits that are 2.0 × 10⁻5 m apart. As a result, an interference pattern comes into view on a screen 2 m away from the slits and parallel to the slits. What is the predicted distance between the central maximum and the next bright fringe on the screen?
