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- Question
When an unbalanced force acts on an object
Options- A. causes change in motion of the object
- B. the speed & direction of the object will change
- C. causes the object to move
- D. All of the above
- Correct Answer
- All of the above
ExplanationUnbalanced forces are the forces which causes change in motion of the object. It sets the object in motion and may cause the object to move. If the object is already in motion, it changes the speed and direction of the object.
- 1. Force of impact is the force
Options- A. by the objects weight
- B. by the speed of the object
- C. when the objects meet
- D. None of the above Discuss
- 2. Air is said to be saturated when
Options- A. its pressure is minimum
- B. it contains the maximum content of water vapour
- C. its thickness is maximum
- D. it blows over the barren land Discuss
- 3. when an atom loses an electron it becomes
Options- A. neutron
- B. negative ion
- C. positive ion
- D. none of the above Discuss
- 4. Tensional forces normally cause which one of the following?
Options- A. normal faults
- B. strike-slip faults
- C. thrust faults
- D. reverse faults Discuss
- 5. In human relations, the irritation threshold is the
Options- A. length of time an annoying behavior continues
- B. action that causes an annoyance
- C. frequency of the annoying behavior
- D. point at which a person notices something and becomes annoyed Discuss
- 6. A voltaic cell converts chemical energy to
Options- A. Heat energy
- B. Electrical energy
- C. Mechanical energy
- D. Light energy Discuss
- 7. Which measurement describes the pressure of a gas?
Options- A. 450 mm Hg
- B. 315 K
- C. 251 g/cub.cm
- D. None of the above Discuss
- 8. The unit for measuring electric power is the
Options- A. Steridian
- B. Watts
- C. Watts
- D. Volts Discuss
- 9. Rear view mirror of car is convex or concave?
Options- A. Convex
- B. Concave
- C. Both A & B
- D. Can't be determined Discuss
- 10. What is the escape velocity of the rocket in the earth is?
Options- A. 12.2 km/sec
- B. 10.2 km/sec
- C. 13.2 km/sec
- D. 11.2 km/sec Discuss
Physics problems
Search Results
Correct Answer: when the objects meet
Explanation:
Force of impact is the force when the objects meet. The speed of the object plays an important role in the generation of force of impact. The laws of physics determine that the force of impact increases with the square of the increase in speed.
Correct Answer: it contains the maximum content of water vapour
Explanation:
Air is said to be saturated when it contains the maximum content of water vapour.
Correct Answer: positive ion
Explanation:
If it loses an electron it becomes a positive ion
Correct Answer: normal faults
Explanation:
Tensional forces normally cause normal faults.
Correct Answer: point at which a person notices something and becomes annoyed
Correct Answer: Electrical energy
Correct Answer: 450 mm Hg
Explanation:
450 mm Hg denotes the air pressure.
Correct Answer: Watts
Correct Answer: Convex
Explanation:
The side view mirror, in all the vehicles we use only convex mirror. This mirror makes the objects and small to show them in the mirror. That's why in all such mirrors, "Ojects in the mirror are closer than they appear."
Correct Answer: 11.2 km/sec
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