Q141
Open questionThe Atomic Energy Act of . . . . . . . . prohibits private control of nuclear power generation.
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Physics GK · all questionsModern Physics
Modern Physics
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Q142
Open questionThe value of plank's constant is
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Q143
Open questionThe ionisation energy of hydrogen atom in the ground state is
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Q144
Open questionA photon of X-ray has energy of 1 keV. A photon of visible radiation has energy of 3 eV. In this context, which one of the following statement(s) is/are not correct?
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Q145
Open questionWhich of the following acts as a moderator in nuclear fission?
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Q146
Open questionWith reference to technologies for solar power production, consider the following statements.
1. 'Photovoltaics' is a technology that generates electricity by direct conversion of light into electricity, while 'Solar Thermal' is a technology that utilizes the Sun's rays to generate heat which is further used in electricity generation process.
2. Photovoltaics generates Alternating Current (AC), while Solar Thermal generates Direct Currect (DC).
3. India has manufacturing base for Solar Thermal Technology, but not for Photovoltaics.
Which of the statements given above is/are correct?
1. 'Photovoltaics' is a technology that generates electricity by direct conversion of light into electricity, while 'Solar Thermal' is a technology that utilizes the Sun's rays to generate heat which is further used in electricity generation process.
2. Photovoltaics generates Alternating Current (AC), while Solar Thermal generates Direct Currect (DC).
3. India has manufacturing base for Solar Thermal Technology, but not for Photovoltaics.
Which of the statements given above is/are correct?
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Q147
Open questionThe force of attraction between an electron revolving around the nucleus and the nucleus is an . . . . . . . . force.
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Q148
Open questionAssertion (A) X-rays are used for studying the structure of crystals.
Reason (R) X-rays are electromagnetic waves.
Reason (R) X-rays are electromagnetic waves.
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Q149
Open questionHydrogen bomb is based on the principle of
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Q150
Open questionWhich is the only operating nuclear reactor in the world using U-233 fuel?
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Q151
Open questionWhat are the links between Dhruva, Purnima and Cirus?
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Q152
Open questionIn LASER (say neon LASER) all the atoms emit the light waves of
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Q153
Open questionWhich one of the following is the source of renewable energy in stars?
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Q154
Open questionIn which region of electromagnetic spectrum does the Lyman series of hydrogen atom lie?
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Q155
Open questionEnriched Uranium is
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Q156
Open questionNuclear fission is a process of . . . . . . . .
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Q157
Open questionWhich of the following technologies has been used by China for its 'artificial sun'?
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Q158
Open question1 curie is equal to
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Q159
Open questionConsider the following statements.
1. The chain reaction process is used in nuclear bombs to release a vast amount of energy, but in nuclear reactors, there is no chain reaction.
2. In a nuclear reactor, the reaction is controlled, while in nuclear bombs, the reaction is uncontrolled.
3. In a nuclear reactor, all operating reactors are 'critical', while there is no question of 'critically' in case of a nuclear bomb.
4. Nuclear reactors do not use moderators, while nuclear bombs use them.
Which of the above statements about operational principles of a nuclear reactor and a nuclear bomb is/are correct?
1. The chain reaction process is used in nuclear bombs to release a vast amount of energy, but in nuclear reactors, there is no chain reaction.
2. In a nuclear reactor, the reaction is controlled, while in nuclear bombs, the reaction is uncontrolled.
3. In a nuclear reactor, all operating reactors are 'critical', while there is no question of 'critically' in case of a nuclear bomb.
4. Nuclear reactors do not use moderators, while nuclear bombs use them.
Which of the above statements about operational principles of a nuclear reactor and a nuclear bomb is/are correct?
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Q160
Open questionConsider the following sentences.
1. The phenomenon of emission of electrons from metals under the effect of light rays is called photoelectric effect.
2. The electron emitted by the photoelectron effect are called proton.
3. The phenomena like interference diffraction and polarisation were explained successfully on the basis of wave nature of radiation.
Which of the above sentence/sentences is/are correct?
1. The phenomenon of emission of electrons from metals under the effect of light rays is called photoelectric effect.
2. The electron emitted by the photoelectron effect are called proton.
3. The phenomena like interference diffraction and polarisation were explained successfully on the basis of wave nature of radiation.
Which of the above sentence/sentences is/are correct?
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