MHT-CET

Ray Optics and Optical Instruments question bank (Physics)

Practice 216 free MHT-CET Physics - Ray Optics and Optical Instruments questions with answers and step-by-step solutions.

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Q1.

$A$ biconvex lens $(R_1 = R_2 = 30 \ cm)$ has a focal length equal to the focal length of a concave mirror. What is the radius of curvature of the concave mirror (in $cm$)? (Refractive index of the material of the lens $\mu = 1.6$)

(A)
$30$
(B)
$40$
(C)
$50$
(D)
$20$
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Q2.

Which of the following is $NOT$ involved in the formation of a secondary rainbow?

(A)
Refraction
(B)
Angular dispersion
(C)
Interference
(D)
Total internal reflection
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