MCQ
What is the use of a tuning fork?
- AIt produces sound when it is hit
- BIt generates electricity
- CIt is used as an electromagnet
- DIt is used as a safety device
Explanation:
A tuning fork is a common device in any experiment with sound. The tuning fork is made to hit so that it vibrates. The vibration of the tuning fork produces a sound.
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A car of mass 1000kg is moving with a velocity of 10ms-1. If the velocity-time graph for this car is a horizontal line parallel to the time axis, then the velocity of car at the end of 25s will be:
| | Column I | | Column II |
| P. | Degree Celsius | I. | Kilogram |
| Q. | Centimetre | II. | Pascal |
| R. | Bar | III. | Metre |
| S. | Milligram | IV. | Kelvin |
Options: