A. Spherical B. Plane C. Cylindrical D. Circular
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A. Newton B. Fresnel C. Huygen D. Young
A. Newton B. Fresnel C. Huygen D. Young
A. Concave mirror B. Convex mirror C. Plane mirror D. Concave lens
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A. A converging lens B. A diverging lens C. Neither a converging nor a diverging D. None of these
A. Wavelength B. Frequency C. Velocity D. Amplitude
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A. Negative B. Positive C. Zero D. Infinite
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A. Negative B. Positive C. Zero D. Infinite
A. Spherical B. Astigmation C. Curvature D. Chromatic