PhysicsHardHigh School (11–12)Optics › Prisms and Dispersion of LightNEETAEEE (Amrita)AMUEEEAP EAPCETBCECECMI Entrance
Created by StemPy LabA thin parallel beam of light passes through an equilateral glass prism of refractive index , which is first in air and then dipped in water of refractive index . Two statements about the prism are given below. Statement I: When the prism is set for minimum deviation, the ray inside the glass runs parallel to the base of the prism. Statement II: The minimum deviation of the same prism, dipped in water, is larger than its minimum deviation in air.
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← The figure shows how the angle of deviation δ changes with the angle of incidence i for a glass prism of refracting angle 60°. The point P marks a ray with i = 40° and δ = 36°. In this graph a second ray also has a deviation of 36°, but it enters at a different angle of incidence. What is that angle of incidence?A Young's double-slit set-up is lit by white light that contains every wavelength between 400 nm and 700 nm. A detector at a point P on the screen finds that the waves from the two slits arrive with a path difference of 1350 nm. Exactly one wavelength of this white light is missing from the light that the detector receives at P, because the waves cancel there. Which wavelength is it? →
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