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ENTRANCE TEST – 2008 Multiple Questions and Answers.
| 26. | A single mode step index fibre has core of about __________ μm diameter | ||
| A. | 50 to 1000. | ||
| B. | 50 | ||
| C. | 30 | ||
| D. | 5 | ||
| 27. | The angular frequency of simple pendulum is directly proportional to __________ | ||
| A. | I. | ||
| B. | 1/I. | ||
| C. | V I. | ||
| D. | V1/I | ||
| 28. | Two waves of slightly different frequencies and traveling in same direction produce ________ | ||
| A. | Interference. | ||
| B. | Polarization. | ||
| C. | Stationary waves. | ||
| D. | Beats. | ||
| 29. | A 5 Ohm resistor is indicated by a single __________ color band around its body. | ||
| A. | Red. | ||
| B. | Green. | ||
| C. | Blue. | ||
| D. | Brown. | ||
| 30. | Practically __________ current flows in a reverse biased p-n junction. | ||
| A. | No. | ||
| B. | Very Large. | ||
| C. | Few milliamperes. | ||
| D. | Both A and C | ||
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