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What are mechanical waves ?...

What are mechanical waves ?

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Mechanical waves are

(A) : The sky waves are not used in the transmission of television signals. (R) : Sky waves are mechanical waves.

Why are sound waves called mechanical waves ?

Transverse mechanical waves cannot be propagated through

What is a wave ? What are elastic waves ?

(A): Transverse mechanical waves can not propagates in liquids and gases. (R): Liquids and gases flow when acted on by shearing stress, they can not sustain shear stress

What kind of mechanical waves exist (a) Inside water? (b) On the surface of water?

Choose the correct statement about the mechanical wave.

The radio and TV programs, telecast at the studio, reach our antenna by wave motion. Is it a mechanical wave or nonmechanical ?

(A): Both transverse and longitudinal mechanical waves can travel through solids, whereas only longitudinal mechanical waves can travel through gases. (R): Gases do not have rigidity modulus.

ICSE-SELF ASSESSMENT PAPER -5-SECTION-B
  1. What are mechanical waves ?

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  2. Define .joulė..the S.I. unit of work and establish a relationship betw...

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  3. Draw a displacement-distance graph for two waves A and B such that the...

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  4. Give one example of forced vibration.

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  5. State two necessary conditions for hearing a distance echo.

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  6. Explain, why in daylight an object appears red when seen through a red...

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  7. Name the extreme colours in pure spectrum of light.

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  8. A substance has nearly zero resistance at a temperature of 1 K What is...

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  9. State the factors affecting the resistance of a conductor.

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  10. An object AB is placed between O and F1 on the principal axis of a con...

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  11. The wavelength of waves produced on the surface of water is 20 cm. If ...

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  12. The wavelength of waves produced on the surface of water is 20 cm. If ...

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  13. (a) How does the angle of deviation produced by a prism change with in...

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  14. How does the angle of minimum deviation produced by a prism change wit...

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  15. Give three reasons for the loss in energy in a machine.

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  16. An electric iron is rated at 220 V, 2 kW. If the iron is used for 2...

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  17. An electric iron is rated at 220 V, 2 kW. Why is the fuse absolutel...

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  18. Name the factor affecting the Centre of gravity of a body.

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  19. A uniform meter scale is kept in equilibrium when supported at the 60 ...

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  20. The given ray diagram illustrates the experimental set up for the dete...

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  21. The given ray diagram illustrates the experimental set up for the dete...

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