Discussion
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- Question
What is the viscosity of an ideal fluid?
Options- A. Equal to its mass
- B. Equal to its weight
- C. Zero
- D. One
- Correct Answer
- Zero
- 1. In a streamline flow, ________ at every point in the fluid remains same.
Options- A. force
- B. pressure
- C. pressure
- D. speed Discuss
- 2. 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
- 3. Acceleration is
Options- A. Inversely proportional to force
- B. Inversely proportional to mass
- C. Directly proportional to mass
- D. Directly proportional to force Discuss
- 4. What is impulse equal to?
Options- A. Change in momentum
- B. Change in force
- C. Change in velocity
- D. Change in acceleration Discuss
- 5. Light travels fastest in
Options- A. Nitrogen
- B. Air
- C. Steel
- D. Vacuum Discuss
- 6. The SI unit of intensity of sound is ______.
Options- A. watt per square meter
- B. joule per square meter
- C. newton per square meter
- D. tesla per square meter Discuss
- 7. Find arc elasticity of demand, if quantity demanded falls from 1000 to 950 when price of the item is increased from Rs. 240 to Rs. 280?
Options- A. 0.33
- B. 0.3
- C. -0.3
- D. -0.33 Discuss
- 8. Why does a fountain pen leak in aeroplane flying at a height?
Options- A. Because of reduced viscosity of the ink in the pen
- B. Because of increased viscosity of the ink in the pen
- C. Because of higher atmospheric pressure outside the pen
- D. Because of lower atmospheric pressure outside the pen Discuss
- 9. Instrument for measuring wind velocity is called
Options- A. Coulombmeter
- B. Anemometer
- C. Cyanometer
- D. Chronometer Discuss
- 10. ______ is the perpendicular distance between point of application of force and axis of rotation.
Options- A. Moment arm
- B. Moment of Inertia
- C. Altitude
- D. Base Discuss
Physics problems
Search Results
Correct Answer: pressure
Correct Answer: Friction
Correct Answer: Directly proportional to force
Correct Answer: Change in momentum
Correct Answer: Vacuum
Correct Answer: watt per square meter
Correct Answer: -0.33
Correct Answer: Because of lower atmospheric pressure outside the pen
Correct Answer: Anemometer
Correct Answer: Moment arm
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