Which of the following quantities increase when wavelength is increased? Consider only the magnitudes.
A. The power of a converging lens.
B. The focal length of a converging lens.
C. The power of a diverging lens.
D. The focal length of a diverging lens.
Focal length of a lens is inversely proportional to the refractive index of a lens. Refractive index is also inversely proportional to the square of wavelength. Thus, we can conclude that the focal length is directly proportional to wavelength; it increases when the wavelength is increased.
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A thin prism of crown glass (μr=1.515, μv =1.525) and a thin prism of flint glass ((μr=1.612, μv =1.632) are placed in contact with each other. Their refracting angles are 5.0° each and are similarly directed. Calculate the angular dispersion produced by the combination.HC Verma - Concepts of Physics Part 1
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Which of the following quantities increase when wavelength is increased? Consider only the magnitudes.HC Verma - Concepts of Physics Part 1
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