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The ratio of amplitude of two waves is 3...

The ratio of amplitude of two waves is 3:4. What is the ratio of their
(i) Loudness?
(ii) Frequencies?

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ICSE-SELF ASSESSMENT PAPER -1-SECTION .B.
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  3. What is an echo?

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  4. State two conditions for the formation of an echo.

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  9. A lens produces a virtual image between the object and the lens. D...

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  10. State Ohm's law.

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  11. A metal wire of resistance 62 Ohms is stretched so that its length inc...

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  12. A person is tuning his radio set to a particular station. What is the ...

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  13. Name the phenomenon involved, in tuning the radio set.

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  18. Give one use each of (a) microwaves, (b) ultraviolet radiations, (c) i...

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  19. Give one use each of (a) microwaves, (b) ultraviolet radiations, (c) i...

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  20. The current rating of fuse is 10 A., Explain the statement.

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