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ENTRANCE TEST – 2014 Multiple Questions and Answers.
| 6. | The distance between atoms is 0.30 nm. What will be the wavelength of X-rays at angle θ = 30o for 1st order diffraction? | ||
| A. | λ = 0.60 nm | ||
| B. | λ = 0.30 nm | ||
| C. | λ = 0.20 nm | ||
| D. | λ = 0.90 nm | ||
| 7. | A 100 kg man is standing in an elevator, which accidently falls freely. What will be the weight of the person in the freely falling elevator (take g=10 m/s2) | ||
| A. | 1000 N | ||
| B. | 10 N | ||
| C. | 500 N | ||
| D. | Zero | ||
| 8. | Frequency of simple pendulum of length 9.8 m will be | ||
| A. | 2 π Hertz | ||
| B. | π/2 Hertz | ||
| C. | 1/2Ï€ Hertz | ||
| D. | π/4 Hertz | ||
| 10. | Food being cooked in microwave oven is an example of | ||
| A. | Beats | ||
| B. | Overtones | ||
| C. | Resonance | ||
| D. | Stationary waves | ||
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