A. Always real B. Always virtual C. Always inverted D. Always enlarged
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A. Convex mirror B. Plane mirror C. Concave mirror D. None of these
A. Doppler’s effect B. Special theory of relativity C. Huygen’s wave theory D. None of these
A. Same frequency B. Same intensity C. Same phase D. Same velocity
A. Red B. Blue C. Yellow D. None
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A. Diffraction B. Interference C. Polarisation D. Refraction
A. Rarer to rarer medium B. Rarer to denser medium C. Denser to denser medium D. Denser to rarer medium
A. Converging B. Diverging C. Parallel D. None
A. Spherical B. Plane C. Cylindrical D. Circular