JEE Main 2022 — Physics Optics
Two coherent sources of light interfere. The intensity ratio of two sources is 1:4. For this interference pattern if the value of Imax−IminImax+Imin is equal to β+32α+1, then βα will be
Held on 27 Jul 2022 · Verified 6 Jul 2026.
1.5
2
0.5
1
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For a transparent prism, if the angle of minimum deviation is equal to its refracting angle, the refractive index $n$ of the prism satisfies.
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As shown in the diagram, when the incident ray is parallel to base of the prism, the emergent ray grazes along the second surface.  If refractive index of the material of prism is $\sqrt{2}$, the angle $\theta$ of prism is.
The size of the images of an object, formed by a thin lens are equal when the object is placed at two different positions 8 cm and 24 cm from the lens. The focal length of the lens is $\_\_\_\_$ cm.
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