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Science Glossary


7. 

A thin pin of iron can be made to float on water-drinking in a bowl. This phenomenon is due to the

Answer : D. Surface tension of water

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8. 

An astronaut of mass 60 kg is revolving around the Earth in a satellite. What will be his weight inside the satellite (assuming g = 10 m/s)?

Answer : B. Zero

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9. 

For which one of the following is capillary not the reason only?

Answer : B. Rising of underground water

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10. 

Which one of the following remains constant while throwing the ball upward?

Answer : B. Acceleration

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11. 

Which one of the following reactions is the main cause of the energy radiation from the sun

Answer : B. Fusion reaction

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12. 

When light enters from air to water, then its

Answer : C. Frequency is same but the wavelength is smaller in water than in air

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