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NEET-XII-Physics

20: dispersion and Spectra

with Solutions - page 2
Qstn# iii-4 Prvs-QstnNext-Qstn
  • #4
    Which of the following quantities related to a lens
    depend on the wavelength or wavelengths of the incident
    light ?
    (a) Power. (b) Focal length.
    (c) Chromatic aberration. (d) Radii of curvature.
    digAnsr:   a,b,c
    Ans : (a) Power
    (b) Focal length
    (c) Chromatic aberration
    The focal length, power and chromatic aberration are dependent on the refractive index of the lens, which itself is dependent on the wavelength of the light.
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