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ENTRANCE TEST – 2010 Multiple Questions and Answers.
| 31. | If a force of 12 N acts on a car and changes its momentum from 36 kgm/sec to 60 kgm/sec, the time during which this change occurs will be | ||
| A. | 24 sec | ||
| B. | 2 sec | ||
| C. | 12 sec | ||
| D. | 8 sec | ||
| 32. | Which one of the following is a non-conservative force? | ||
| A. | Electric force | ||
| B. | Elastic spring force | ||
| C. | Gravitational force | ||
| D. | Frictional force | ||
| 33. | Value of escape velocity for the surface of the earth is 11 km/sec. Its value for surface of the moon is | ||
| A. | 11 km/sec | ||
| B. | 1.4 kWm | ||
| C. | 1.0 Wm | ||
| D. | 4.3 km/sec | ||
| 34. | On a clear day at noon, the intensity of solar energy reaching the earth’s surface is about | ||
| A. | 1.0 kWm-2 | ||
| B. | 1.4 kWm-2 | ||
| C. | 1.0 Wm-2 | ||
| D. | 1.4 Wm-2 | ||
| 35. | When a lift is accelerated upward, the apparent weight of an object in it will be | ||
| A. | Equal to its real weigh | ||
| B. | Less than its real weight | ||
| C. | Zero | ||
| D. | Greater than its real weight | ||
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