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Give two uses of UV rays....

Give two uses of UV rays.

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OSWAAL PUBLICATION-Sample Paper 4-Exercise
  1. Write any two differences between diamagnetic and paramaganetic substa...

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  2. Current in a coil falls from 5 A to 0 A in 0.1 s, calculate the induce...

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  3. Give two uses of UV rays.

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  4. Draw the ray diagram for the formation of image in case of a concave m...

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  5. Distinguish between extrinsic and intrinsic semiconductors.

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  6. Write the block diagram of a transmitter.

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  7. Derive the relation between electric field and electric potential.

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  8. Arrive at the expression for velocity selector using Lorentz force.

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  9. Mention any three salient features of Hysteresis loop.

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  10. Derive the expression for motional emf induced in a conductor moving i...

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  11. Mention one power loss in transformer.

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  12. Using Huygen's wave theory of light, show that the angle of incidence ...

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  13. Write Einstein's photoelectric equation. State clearly how this equati...

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  14. Explain the working of a zener diode as a voltage regulator.

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  15. Derive an expression for electric field due to an electric dipole at a...

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  16. Obtain an expression for the equivalent emf and internal resistance of...

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  17. Derive the expression for magnetic field at a point on the axis of a c...

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  18. what is interference ? Write the condition for path difference in case...

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  19. Obtain an expression for the total energy of an electron in the n^(th)...

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  20. What is amplification? With a circuit diagram, explain the working of ...

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