Physics Quiz 5

Physics Quiz 5

1. Sound travels at the fastest speed in





2. Sound travels with a different speed in media. In what order does the velocity of sound increase in these media?





3. Of the following natural phenomena, tell which one known in Sanskrit as 'deer's thirst'?





4. It takes much longer to cook food in the hills than in the plains, because





5. Suitable impurities are added to a semiconductor depending on its use. This is done in order to





6. One thousand microns is equal to





7. Inside an aeroplane, flying at a high altitude





8. Moment of inertia is





9. Stars twinkle because





10. On a clean glass plate a drop of water spreads to form a thin layer whereas a drop of mercury remains almost spherical because







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