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What will be the rest energy of an electron?

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Important Questions on Relativity

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Define binding energy of nucleus.
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In relativistic case, as the velocity of the particle approaches the speed of light the kinetic energy approaches______.
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If the speed of light were 23 of its present value, the energy released in a given atomic explosion will be decreased by a factor of
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The basic theorem/principle used to obtain mass-energy relation is
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Which of the following is Einstein's mass energy relation?

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If the speed of light were 2/3 of its present value, the energy released in a given atomic explosion will decrease by a factor of ___.
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What is meant by binding energy per nucleon ?
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A photon of frequency 1016 Hz, has a mass of _____ ×10-34kg.
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The binding energy of an electron to a proton is 13.6eV. The loss of mass in the formation of one atom of hydrogen is 
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On the annihilation of a particle and its antiparticle, the energy released is E. What is the mass of each particle?
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For pair production phenomenon to accur to photon must have energy, greater than or equal to ______.
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If a star radiates energy at the rate of 5×1020 Jsec. What is the rate at which its mass is decreasing?
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What is the kinetic energy of an electron in electronvolts with mass equal to double its rest mass ?
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The relativistic mass of a particle moving with a speed of 2.0×108ms-1 in an accelerator is found to be 2.4×10-26kg. the rest mass of the particle is c=3.0×108ms-1
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Einstein's mass-energy relation shows that
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An astronaut of rest has a heart rate of 65 beatsmin. When the astronauts spaceship moves of a speed of 0.6C, her heart rate as measured by an earth observer will be: 
HARD
If the speed of light were 23 of its present value, the energy released in a given atomic explosion will decrease by a factor of _____.
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_____ and energy of the universe are conserved as a single entity according to the theory of relativity.
MEDIUM
At what velocity, the kinetic energy of a particle is equal to the rest mass energy
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The momentum of a photon having energy 10-17 J is