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- Question
1kWh = ?
Options- A. 3.6 x 105 J
- B. 3.6 x 106 J
- C. 3.6 x 10-5 J
- D. 3.6 x 10-6 J
- Correct Answer
- 3.6 x 106 J
- 1. In which form is the supplied heat energy stored during change in temperature of substance?
Options- A. Heat energy
- B. Kinetic energy
- C. Potential energy
- D. Both kinetic and potential energy Discuss
- 2. Kinetic energy depends on
Options- A. the velocity or speed of the moving body.
- B. the mass of the moving body
- C. the pressure of the moving body
- D. both mass and velocity of the moving body Discuss
- 3. When we see an object, the image formed on the retina is ________
Options- A. Real and inverted
- B. Real and erect
- C. Virtual and erect
- D. Virtual and inverted Discuss
- 4. What will happen if an object is dropped from a height and there is no air resistance?
Options- A. It will fall with a constant speed and acceleration
- B. Its acceleration will increase
- C. Both speed and acceleration will increase
- D. Its speed will increase Discuss
- 5. The force exerted on an object is 200 N and its mass is 100 kg. Find the acceleration of the object.
Options- A. 2 m/s
- B. 2 m
- C. 2 m/sq.s
- D. 2 s Discuss
- 6. When a number of resistors are connected in series in a circuit, the value of current:
Options- A. increases
- B. becomes half
- C. decreases
- D. remains the same Discuss
- 7. A 4 kg object is moving horizontally with a speed of 5 m/s. To increase its speed to 10 m/s, the amount of net work required to be done on this object is:
Options- A. 150 J
- B. 100 J
- C. 50 J
- D. 75 J Discuss
- 8. The reflector of a search light is a :
Options- A. Convex mirror
- B. Concave mirror
- C. Plane mirror
- D. Cylindrical mirror Discuss
- 9. The SI unit of resistance is:
Options- A. Newton
- B. Coulomb
- C. Ohm
- D. Joule Discuss
- 10. A covex mirror of focal length f (in air) is immersed in a liquid (u=4/3). The focal length of the mirror in the liquid will be :
Options- A. f
- B. (4/3)f
- C. (3/4)f
- D. (7/3)f Discuss
Physics problems
Search Results
Correct Answer: Kinetic energy
Correct Answer: both mass and velocity of the moving body
Correct Answer: Real and inverted
Correct Answer: Its speed will increase
Correct Answer: 2 m/sq.s
Correct Answer: remains the same
Correct Answer: 150 J
Correct Answer: Concave mirror
Correct Answer: Ohm
Correct Answer: f
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