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Define half-life of a radioactive substa...

Define half-life of a radioactive substance. Derive the expression for half life of a radioactive substance.

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OSWAAL PUBLICATION-Sample Paper 7-Exercise
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  2. The current in a coil is changing from 10 A and 8 A in 0.01 second. Th...

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

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  4. State two conditions required for obtaining coherent sources. In Young...

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  5. Derive an expression for potential energy of a system of two charges i...

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  6. What is full wave rectification? Explain the working of a full wave re...

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  7. With the help of necessary circuit diagram explain the working of a ph...

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  8. Show that the force on each plate of a parallel plate capacitor has a ...

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  9. Distinguish between .sky waves. and .space waves. modes of propagatio...

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  10. Distinguish between .sky waves. and .space waves. modes of propagatio...

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  11. Define half-life of a radioactive substance. Derive the expression for...

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  12. A small compass needle of magnetic moment .m. is free to turn about an...

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  13. A compass needle, free to turn in a vertical plane orients itself wit...

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  14. A compass needle, free to turn in a vertical plane orients itself wit...

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  15. What is drift velocity of free electrons ? Deduce I = n A eV(d) where ...

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  16. A charged particle enters a region of uniform magnetic field with its ...

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  17. A charged particle enters a region of uniform magnetic field with its ...

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  18. The spectrum of a star in the visible and the ultraviolet region was o...

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  19. Calculate the resonant frequency and Q-factor of a series L-C-R circui...

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  20. In a Young.s slit experiment, the slits are separated by 0.24 mm and ...

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