List of top Material Science and Technology Questions on Optics

Which statements are true for total internal reflection?
A. The angle of incidence must be greater than the critical angle
B. light goes from an optically denser medium to an optically rarer medium.
C. light goes from an optically rarer medium to an optically denser medium.
D. The critical angle depends on the refractive index of both media.
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Match the LIST-I with LIST-II 

LIST-I (Aberrations)LIST-II (Consequences)
A. Spherical aberrationI. image of a point object as a disc
B. ComaII. spreading of the image along the principal axis
C. AstigmatismIII. Line object is not imaged into a line
D. DistortionIV. Image of a point object is a blurred surface


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Which statements are true about wave propagation through a medium:
A. Frequency changes in a non-linear medium but remains constant in a linear medium.
B. Frequency changes in a linear medium but remains constant in a non-linear medium.
C. R + T = 1, where R is the reflection coefficient and T is the transmission coefficient
D. R + T $>$ 1, where R is the reflection coefficient and T is the transmission coefficient
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