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Explain briefly why the work done by a f...

Explain briefly why the work done by a fielder when he takes a catch in a cricket match is negative.

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ICSE-SELF ASSESSMENT PAPER -3-SECTION-B
  1. Explain briefly why the work done by a fielder when he takes a catch i...

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  2. Find the equivalent resistance between points A and B.

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  3. Define the term momentum.

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  4. How is force related to the momentum of a body?

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  5. State the condition when change in momentum of a body depends only on ...

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  6. A wire of length 80 cm has a frequency of 256 Hz. Calculate the length...

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  7. A certain sound has a frequency of 256 hertz and a wavelength of 1.3 m...

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  8. What is MCB ? Why it is convenient over fuse?

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  9. Name two factors on which the internal resistance of a cell depends an...

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  10. Name any four regions of electromagnetic spectrum in increasing order ...

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  11. Calculate the refractive index of a liquid with respect to air applyin...

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  12. Write a relationship between angle of incidence and angle of refractio...

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  13. When a ray of light enters from one medium to another having different...

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  14. Write one condition where it does not bend when entering a medium of d...

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  15. Where should an object be placed so that a real and inverted image of ...

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  17. Derive a relationship between mechanical advantage, velocity ratio and...

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  18. Explain why mechanical advantage of a class II lever is always more th...

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  19. Which particles are responsible for current in conductors?

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  20. To which wire of a cable in a power circuit should the metal case of a...

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  21. Material with which a fuse is made

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