When red, blue and green light coming parallel to principal axis fall on a convex lens, they will converge on the axis at: (a) One point (b) Two points (c) Three points (d) Always at one point
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C.three points
Bcus the red blue and green lights have different wavelengths and their speed differs.red light has the least wavelength and travels fastest.blue light has the longest wavelength and travels the slowest.
Bcus the red blue and green lights have different wavelengths and their speed differs.red light has the least wavelength and travels fastest.blue light has the longest wavelength and travels the slowest.
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