Discussion
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- Question
Warm air is ______.
Options- A. heavier than cold air hence warm air rises up
- B. lighter than cold air hence warm air moves down
- C. lighter than cold air hence warm air rises up
- D. heavier than cold air hence warm air moves down
- Correct Answer
- lighter than cold air hence warm air rises up
- 1. The SI unit of acceleration is __________.
Options- A. ms-1
- B. ms-2
- C. ms2
- D. m/s Discuss
- 2. Calculate the pressure (in Pa) if a thrust of 800 N is applied to an area of 16 m2.
Options- A. 128
- B. 100
- C. 64
- D. 50 Discuss
- 3. Air expands when it _______________.
Options- A. is cooled
- B. is heated
- C. is under pressure
- D. becomes more humid Discuss
- 4. The slope of a DistanceTime graph shows ___________.
Options- A. acceleration
- B. momentum
- C. mass
- D. speed Discuss
- 5. Terminal velocity ________.
Options- A. first increases before decreasing
- B. is constant
- C. first decreases before increasing
- D. always keeps on increasing Discuss
- 6. Instrument for measuring work performed is called _________.
Options- A. Eudiometer
- B. Anemometer
- C. Hyetometer
- D. Ergometer Discuss
- 7. What is the unit of the physical quantity "Stress"?
Options- A. newton second
- B. steradian
- C. pascal
- D. joule Discuss
- 8. Light travels fastest in
Options- A. Nitrogen
- B. Air
- C. Steel
- D. Vacuum Discuss
- 9. What is impulse equal to?
Options- A. Change in momentum
- B. Change in force
- C. Change in velocity
- D. Change in acceleration Discuss
- 10. Acceleration is
Options- A. Inversely proportional to force
- B. Inversely proportional to mass
- C. Directly proportional to mass
- D. Directly proportional to force Discuss
Physics problems
Search Results
Correct Answer: ms-2
Correct Answer: 50
Correct Answer: is heated
Correct Answer: speed
Correct Answer: is constant
Correct Answer: Ergometer
Correct Answer: pascal
Correct Answer: Vacuum
Correct Answer: Change in momentum
Correct Answer: Directly proportional to force
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