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Explain why objects moving in fluids mus...

Explain why objects moving in fluids must have special shapes.

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MBD -HARYANA BOARD-SHORT ANSWER TYPE QUESTIONS-EXAMPLE
  1. Explain why sliding friction is less than static friction.

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  2. Give examples to show that friction is both a friend and a foe.

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  3. Explain why objects moving in fluids must have special shapes.

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  4. The following diagram shows some instruments. Identify the part which ...

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  5. Identify the picture. Tell whose picture is this and which part of it ...

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  6. The following diagram shows which instrument? Which part of it produce...

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  7. Identify the diagrams and tell i) Which produces lower pitch of soun...

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  8. A pendulum oscillates 40 times in 4 seconds. Find its time period and ...

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  9. The sound from a mosquito is produced when it vibrates its wings at an...

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  10. What is the difference between noise and music? Can music become noise...

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  11. List sources of noise pollution in your surroundings.

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  12. Explain in what way noise pollution is harmful to humans.

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  13. Your parents are going to buy a house. They have been offered one on t...

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  14. Sketch larynx and explain its function in your own words.

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  15. Lightning and thunder take place in the sky at the same time and at th...

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  16. Which type of activity is shown in the picture? How would you protect ...

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  17. Sometimes, a crackling sound is heard while taking off a sweater durin...

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  18. Explain why a charged body loses its charge if we touch it with our ha...

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  19. Name the scale on which the destructive energy of an earthquake is mea...

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  20. Explain why a charged balloon is repelled by another charged balloon w...

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