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What is the value of the speed of gamma ...

What is the value of the speed of gamma radiations in air or vacuum ?

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Speed of `gamma` radiation = `3xx10^(8)m//s` in air or vacuum.
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ICSE-SAMPLE PAPER 2012-SECTION-II
  1. What is the value of the speed of gamma radiations in air or vacuum ?

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  2. Which of the following remains constant in uniform circular motion. Sp...

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  3. Name the force required for circular motion. State its direction.

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  4. State the class of levers and the relative positions of load (L), effo...

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  5. Why is less effort needed to lift a load over an inclined plane as com...

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  6. A moving body weighing 400 N possesses 500 J of kinetic energy. Calcul...

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  7. Under what condition will a set of gears produce : (1) a gain in spe...

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  8. What is meant by the term 'critical angle'?

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  9. How is it related to the refractive index of the medium ?

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  10. A tank of water is viewed normally from above. (a) State how does th...

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  11. A ray of light PQ is incident normally on the hypotenuse of a right an...

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  12. A ray of light PQ is incident normally on the hypotenuse of a right an...

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  13. A ray of light PQ is incident normally on the hypotenuse of a right an...

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  14. A converging lens is used to obtain an image of an object placed in fr...

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  15. A converging lens is used to obtain an image of an object placed in fr...

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  16. What is meant by Resonance ?

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  17. State two ways in which Resonance differs from Forced vibrations.

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  18. A man standing between two cliffs produces a sound and hears two succe...

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  19. Why will an echo not be heard when the distance between the source of ...

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  20. The diagram below shows the displacement-time graph for a vibrating bo...

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  21. The diagram in Fig. shows the displacement time graph of a vibrating b...

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