Discussion
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- Question
Light travels fastest in
Options- A. Nitrogen
- B. Air
- C. Steel
- D. Vacuum
- Correct Answer
- Vacuum
- 1. What is the unit of the physical quantity "Stress"?
Options- A. newton second
- B. steradian
- C. pascal
- D. joule Discuss
- 2. Instrument for measuring work performed is called _________.
Options- A. Eudiometer
- B. Anemometer
- C. Hyetometer
- D. Ergometer Discuss
- 3. 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 Discuss
- 4. The SI unit of acceleration is __________.
Options- A. ms-1
- B. ms-2
- C. ms2
- D. m/s Discuss
- 5. 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
- 6. What is impulse equal to?
Options- A. Change in momentum
- B. Change in force
- C. Change in velocity
- D. Change in acceleration Discuss
- 7. Acceleration is
Options- A. Inversely proportional to force
- B. Inversely proportional to mass
- C. Directly proportional to mass
- D. Directly proportional to force Discuss
- 8. If a body slides over a surface, the force resisting the motion between them is called ______.
Options- A. Centripetal force
- B. Friction
- C. Centrifugal force
- D. Inertia Discuss
- 9. In a streamline flow, ________ at every point in the fluid remains same.
Options- A. force
- B. pressure
- C. pressure
- D. speed Discuss
- 10. What is the viscosity of an ideal fluid?
Options- A. Equal to its mass
- B. Equal to its weight
- C. Zero
- D. One Discuss
Physics problems
Search Results
Correct Answer: pascal
Correct Answer: Ergometer
Correct Answer: lighter than cold air hence warm air rises up
Correct Answer: ms-2
Correct Answer: 50
Correct Answer: Change in momentum
Correct Answer: Directly proportional to force
Correct Answer: Friction
Correct Answer: pressure
Correct Answer: Zero
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