81. If input frequency of a full wave rectifier be n, then output frequency would be
82. Kalpakkam is famous
83. What is the code name of India's first successful nuclear test?
84. Assertion (A) The force of repulsion between atomic nucleus and α-particle varies with distance according to inverse square law.
Reason (R) Rutherford did α-particle scattering experiment.
Reason (R) Rutherford did α-particle scattering experiment.
85. By what means does the sun's energy generate?
86. What is true for Kalpakkam Fast Breeder Reactor?
1. In it, only natural uranium is used as a fuel.
2. In it, Plutonium carbide and natural uranium carbide mixture are used as a fuel.
3. More than 200 M Watt atomic electricity would be produced from it.
Choose the correct answer:
1. In it, only natural uranium is used as a fuel.
2. In it, Plutonium carbide and natural uranium carbide mixture are used as a fuel.
3. More than 200 M Watt atomic electricity would be produced from it.
Choose the correct answer:
87. In the 1940s, some great scientists tried to purify uranium and manufacture atom bomb. What was the name of this project?
88. Hydrogen spectrum was first explained by
89. The stars receive their energy from which of the following?
90. Heavy water is manufactured in India at
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