Gk Questions with AnswersPhysics General Knowledge Questions and Answers
| 17. | What is the number of basic unit in the International System of Units? | ||
|---|---|---|---|
| A. 4 | |||
| B. 5 | |||
| C. 6 | |||
| D. 7 | |||
| Answer | ||
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| 18. | Which one among the following would expand the most on being heated? | ||
|---|---|---|---|
| A. Glass | |||
| B. Air | |||
| C. Water | |||
| D. Alcohol | |||
| Answer | ||
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| 19. | The wavelength of X-rays is of the order of | ||
|---|---|---|---|
| A. 1 cm | |||
| B. 1 Angstrom | |||
| C. 1 m | |||
| D. 10 micron | |||
| Answer | ||
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| 20. | Who was the inventor of gravitational force? | ||
|---|---|---|---|
| A. JJ. Thomson | |||
| B. Newton | |||
| C. Faraday | |||
| D. Edison | |||
| Answer | ||
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