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Define half life of a radioactive elemen...

Define half life of a radioactive element and deduce the expression for the same .

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OSWAAL PUBLICATION-Sample Paper 3-Exercise
  1. What is a thin prism? Write its deviation expression.

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  2. How do you represent plane polarized and unpolarised light ?

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  3. Define half life of a radioactive element and deduce the expression fo...

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  4. Give three differences between intrinsic and extrinsic semiconductors

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  5. Derive an expression for the electric potential energy of a system of ...

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  6. State and explain Ohm.s law and hence defien ohm.

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  7. Write any four properties of ferromagnetic materials and give an examp...

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  8. Derive the expression for emf induced in a straight conductor moving p...

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  9. State any three feautures of nuclear force

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  10. Distinguish between conductors, insulators and semiconductors on the b...

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  11. Draw a neat labelled block diagram of an AM transmitter.

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  12. Derive an expression for the electric field at a point due to an infin...

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  13. Obtain an expression for equivalent resistance of two resistors connec...

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

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  15. Derive the expression for refractive index of the material of the pris...

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  16. Explain three facts of photoelectric effect using Einstein's photoelec...

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  17. With a circuit diagram, explain the action of n-p-n transistor as an a...

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  18. A 400 pF capacitor charged by a 100 V dc supply is disconnected from t...

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  19. (a) Three resistor 1Omega ,2Omega, and 3Omega are combined in series. ...

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  20. A series LCR circuit with our 20 Omega , = 1.5 H and C = 35 mu F is c...

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