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With the emissions of an alpha particle the neutron proton ratio
Answer: D. May remain same With the emission of an alpha particle the neutron proton ratio may remain same.
Answer: D. May remain same
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Which one of the following is not the nature of nuclear force?
Answer: B. Charge dependance The following charge dependance is not the nature of nuclear force.
Answer: B. Charge dependance
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In Young’s double slit experiment d is halved and D is double. Then fringe width will be
Answer: D. Quadrupled In Young's double slit experiment d is halved and D is doubled. Then fringe with will be quadrupled.
Answer: D. Quadrupled
See lessIn Young’s double slit experiment d is halved and D is doubled. Then fringe with will be quadrupled.
During reflection and reflection which properties of light remains constant?
Answer: A. Frequency During reflection and refraction the properties frequency of light remains constant.
Answer: A. Frequency
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Interference obeys principle of conservation of
Answer: A. Energy Interference obeys principle of conservation of energy.
Answer: A. Energy
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Optical fibre works on which principle?
Answer: C. Total interal reflection Optical fibre works on the principle of total internal reflection.
Answer: C. Total interal reflection
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Two light sources are coherent when
Answer: D. Their phase difference is constant Two light sources are coherent when their phase difference is constant.
Answer: D. Their phase difference is constant
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The image formed by concave lens is
Answer: B. Always virtual The image formed by concave lens is always virtual.
Answer: B. Always virtual
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A real, inverted and equal in size image can be formed by a
Answer: C. Concave mirror A real, inverted and equal in size image can be formed by concave mirror.
Answer: C. Concave mirror
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The theory associated with secondary wavelet is
Answer: C. Huygen's wave theory The theory associated with secondary wavelet is Huygen's wave theory.
Answer: C. Huygen’s wave theory
See lessThe theory associated with secondary wavelet is Huygen’s wave theory.