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Define the term energy and state its S.I...

Define the term energy and state its S.I. unit

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Energy is the capacity to do work its unit is joule
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ICSE-SELF ASSESSMENT PAPER -3-SECTION-A
  1. Explain briefly what causes the twinkling of stars at night?

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  2. Complete the following sentences : (a) 1J= …………ealorie . (b) 1 kWh …...

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  3. Define the term energy and state its S.I. unit

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  4. An electric heater is rated 1000 W - 200 V. Calculate the resistan...

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  5. An electric heater is rated 1000 W - 200 V. Calculate the current ...

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  6. Name a gas caused by the Greenhouse effect.

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  7. Which property of water makes it an effective coolant ?

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  8. State the conditions required for total internal reflection of light t...

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  9. State the energy changes in the following while in use: Burning of a...

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  10. State the energy changes in the following while in use: A steam engi...

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  11. An enemy plane is at a distance of 300 km from a radar. In how much ti...

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  12. Why is white light considered to be polychromatic in nature?

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  13. Give the range of wavelength of the electromagnetic waves visible to u...

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  14. Draw a labelled diagram of a three pin socket.

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  15. The following diagram shows a 60^(@),30^(@),90^(@) glass prism of crit...

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  16. Identify the following wires used in a household circuit : The wire ...

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  17. Identify the following wires used in a household circuit : The wire ...

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  18. With reference to the term mechanical advantage, velocity ratio and ef...

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  19. State one use and one harmful effect of radioactivity.

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  20. How can a temperature in degree Celsius be converted into S.I. unit of...

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