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Give one use each of (a) microwaves, (b)...

Give one use each of (a) microwaves, (b) ultraviolet radiations, (c) infrared radiations, and (d) gamma rays.

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Ultraviolet radiations - sterilizing purposes and detecting the purity of gems
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ICSE-SELF ASSESSMENT PAPER -1-SECTION .B.
  1. A half meter rod is pivoted at the centre with two weights of 20 gf an...

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

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

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

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

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  6. Answer the following: (1) Name the three wires of the cable. (2)...

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  7. Calculate the quantity of heat that will be produced in a coil of resi...

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  8. A pulley system has a velocity ratio of 4 and an efficiency of 90%, ca...

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  9. A pulley system has a velocity ratio of 4 and an efficiency of 90%, ca...

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  10. Name the radiations which are absorbed by the green house gases in the...

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  11. A radiation X is focused by a particular device on the bulb of a therm...

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  12. Name two factors on which the heat energy liberated by a body depends.

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  13. What is the principle of method of mixture ? What other name is given ...

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  14. Name the law on which this principle is based.

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  15. Draw a diagram to show the energy changes in an oscillating simple pen...

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  16. An object is placed at a distance of 12 cm from a convex lens of focal...

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  17. An object is placed at a distance of 12 cm from a convex lens of focal...

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

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  19. Mention two important precautions that should be taken while handling ...

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  20. State one use of radio-isotopes.

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