MCQ
Standing waves can be produced
- AOn a string clamped at both the ends
- BOn a string clamped at one end and free at the other
- CWhen incident wave gets reflected from a wall
- ✓All of the above.
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An astronaut in an orbiting space station above the Earth experiences weightlessness. and
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An object moving around the Earth under the influence of Earth's gravitational force is in a state of 'free-fall'.