Discussion
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- Question
Which one of the following takes place during a nuclear fusion?
Options- A. a heavy nucleus bombarded by neutrons breaks up
- B. a heavy nucleus breaks up spontaneously
- C. two light nuclei combine to form a heavy nucleus
- D. a light nucleus breaks up spontaneously
- Correct Answer
- two light nuclei combine to form a heavy nucleus
- 1. Ozone protects biosphere from ___________
Options- A. X - rays
- B. Gamma rays
- C. Ultraviolet rays
- D. Infrared rays Discuss
- 2. Every hot object emits _________________
Options- A. X - rays
- B. Visible light
- C. Infrared rays
- D. Ultraviolet rays Discuss
- 3. The quality or tone of a musical sound produced by a stringed instrument depends on
Options- A. frequency of vibration
- B. length of the strings in the instrument
- C. Amplitude of vibration
- D. waveform of the sound Discuss
- 4. A particle is thrown vertically upward. When it reaches the highest point, it has ____________
Options- A. a downward acceleration
- B. an upward acceleration
- C. a downward velocity
- D. a horizontal velocity Discuss
- 5. _________________ is a measure of the moisture in air.
Options- A. Density
- B. Viscosity
- C. Impurity
- D. Humidity Discuss
- 6. The frictional force exerted by fluids is also called ________.
Options- A. drag
- B. buoyancy
- C. upthrust
- D. convection Discuss
- 7. If the force applied on the object is in the direction of its motion, the speed of the object __________.
Options- A. increases
- B. stops
- C. decreases
- D. no effect Discuss
- 8. An image formed by a concave mirror on a screen is called __________?
Options- A. Virtual image
- B. Real image
- C. Inverted image
- D. Erect image Discuss
- 9. _______ optical data storage is a technology where data is stored in multiple layers in the optical disc.
Options- A. 3D
- B. 30D
- C. 300D
- D. 3000D Discuss
- 10. What is the SI unit of pressure?
Options- A. Newton
- B. Weber
- C. Pascal
- D. Henry Discuss
Physics problems
Search Results
Correct Answer: Ultraviolet rays
Correct Answer: Infrared rays
Correct Answer: waveform of the sound
Correct Answer: a downward acceleration
Correct Answer: Humidity
Correct Answer: drag
Correct Answer: increases
Correct Answer: Real image
Correct Answer: 3D
Correct Answer: Pascal
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