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ENTRANCE TEST – 2010 Multiple Questions and Answers.
| 21. | In the half-life of an element, the equation for the number of decaying atoms is given by | ||
| A. | ΔN ∝ -NΔt | ||
| B. | ΔN = KNΔt | ||
| C. | ΔN ∝ -nΔt | ||
| D. | ΔN = -ΔNΔt | ||
| 22. | Decay constant ‘λ’ is given as | ||
| A. | - ∆N/N ∆t | ||
| B. | - ∆N /∆t | ||
| C. | - N/ ∆t | ||
| D. | ∆N/N ∆t | ||
| 23. | The SI unit of absorbed dose ‘D’ i.e. radiation effect is Gray and one Gray is equal to | ||
| A. | kJ / mol | ||
| B. | J / mol | ||
| C. | kg / J | ||
| D. | J / kg | ||
| 24. | The principle of homogeneity of dimensions determines | ||
| A. | Only variable in the equation | ||
| B. | Only constant in the equation | ||
| C. | Correctness of an equation | ||
| D. | Constant and variable in the equation | ||
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