General Studies  Physics

1. Who discovered electron

Ruther ford Goldstein Einstein J.J.Thomson

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2. The centripetal force of electron around the nucleus is provided by

Magnetic force Nuclear force Electrostatic force of attraction Gravitational force

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3. Radio activity is discovered by

Roentgen Mary Curie Henry bequrrel Joliot Curie

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4. Unit of radioactivity

becqurrel curie disintegration/second all the above

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5. Principle of atom bomb

nuclear fission nuclear fusion thermo nuclear reaction none

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6. energy released per nuclear fission

200 eV 26.7 MeV 200 MeV 26.7 eV

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7. Rain drop is spherical due to

Buyont force Surface tension Upthrust force Viscous force

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8. when temperature decreases,surface tension is

zero not changed increases decreases

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9. Instrument measuring atmospheric pressure

Barometer Calori meter Mano meter Rain gauge

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10. 1The pressure of fluids depends on

Volume Temperature Density Nature of substance

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