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What will be the energy of electron travelling at $10^{7}\,\,\rm{ms^{-1}}$
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Sunlight will emit photo electrons when it strikes which of the following
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The stopping potential depends on
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Anti matter theory was proposed by
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Twin paradox is consequence of?
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Who proposed matter waves?
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Which statement is universally correct?
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The absolute standard of rest is
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The energy equivalent to 0.9 mg is?
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The amount of photoelectric current depends upon:
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In demonstrating photoelectric effect, when light falling on the cathode is cut off, the ammeter shows:
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Photoelectric effect means the emission of:
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The process through which photons can interact with matter is:
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Electromagnetic radiation means:
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The way through which electromagnetic radiations or photons interact with matter depends upon their:
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The detection of r-radiation with energy 1 MeV as quanta is:
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If $\rho$ represents linear momentum and c, the velocity of light, then unit of $\rho c$ in international system of units is:
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The SI unit of Stefan's constant is:
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The value of Planck's constant in SI units is:
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From the theory of relativity, the momentum $\rho$ of the photon is expressed as:
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The value of Stefan's constant in SI units is:
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The value of Wien's constant in SI units is:
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The ratio of energy E to the corresponding frequency (f) of the radiation (emitted or absorbed) is called:
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Planck suggested that energy is radiated or absorbed:
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The radiation energy:
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