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Phase reversal takes place in case of reflection from
Answer: B. Rarer to denser medium Phase reversal takes place in case of reflection from rarer to denser medium.
Answer: B. Rarer to denser medium
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Rays associated with a plane wavefront are
Answer: C. Parallel Rays associated with a plane wavefront are parallel.
Answer: C. Parallel
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Normals to wavefront are called
Answer: D. Rays Normals to wavefront are called rays.
Answer: D. Rays
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Wavefront from a near point light source is
Answer: A. Spherical Wavefront from a near point light source is spherical.
Answer: A. Spherical
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When the light travels from glass to air, there will be no change in its:
Answer: B. Frequency When the light travels from glass to air, there will be no change in its frequency.
Answer: B. Frequency
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The sign of power of convex lens is
Answer: B. Positive The sign of power of a convex lens is positive.
Answer: B. Positive
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The power of glass slab is
Answer: C. Zero The power of glass slab is zero.
Answer: C. Zero
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Huygen’s wave theory of light cannot explain:
Answer: D. Photoelectric effect Huygen's wave theory of light cannot explain photoelectric effect.
Answer: D. Photoelectric effect
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When monochromatic light travels from air to glass, then
Answer: C. Wavelength decrease When monochromatic light travels from air to glass, then wavelength decrease.
Answer: C. Wavelength decrease
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A yellow flower if looked through red glass will look like:
Answer: A. Black A yellow flower is looked through red glass will look like black.
Answer: A. Black
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