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- Question
If a person moves a trolley for a distance of 10 m with a force of 50 N, then the work done is
Options- A. 0.2 J
- B. 5 J
- C. 20 J
- D. 500 J
- Correct Answer
- 500 J
- 1. Heat flows as a result of difference of _____.
Options- A. Temperature
- B. Density
- C. mass
- D. Volume Discuss
- 2. Heat transfer by conduction occurs when molecules
Options- A. Collide
- B. Combine
- C. Heated
- D. None of the above Discuss
- 3. Gasoline is useful in cars because it has
Options- A. chemical potential energy
- B. electrical potential energy
- C. gravitational potential energy
- D. kinetic energy Discuss
- 4. Through which light cannot pass?
Options- A. Notebook paper
- B. Water
- C. Book
- D. Sun glasses Discuss
- 5. Which of these instruments is used to measure the wind speed?
Options- A. Anemometer
- B. Inclinometer
- C. Fathometer
- D. Calorimeter Discuss
- 6. Which of the following is a device designed to protect electrical devices from voltage spikes?
Options- A. Voltage unloader
- B. Surge protector
- C. Heat protector
- D. Current unloader Discuss
- 7. The material used in electric heater is
Options- A. Tungsten
- B. Nichrome
- C. Brass
- D. Steel Discuss
- 8. Increased wind speed is accompanied by a reduced air _____________.
Options- A. humidity
- B. pressure
- C. density
- D. aridity Discuss
- 9. Rate of change of displacement is known as ............
Options- A. Acceleration
- B. Velocity
- C. Speed
- D. Distance Discuss
- 10. An object at rest will remain at rest and an object in motion will remain in motion until and unless it is acted upon by an external force. This is Newton's
Options- A. First law
- B. Second law
- C. Third law
- D. Fourth law Discuss
Physics problems
Search Results
Correct Answer: Temperature
Correct Answer: Collide
Correct Answer: chemical potential energy
Explanation:
Gasoline is a colorless petroleum-derived flammable liquid that is used primarily as a fuel in spark-ignited internal combustion engines. It consists mostly of organic compounds obtained by the fractional distillation of petroleum, enhanced with a variety of additives. It is also called as Petrol. It has chemical potential energy, in combustion it is turned into light, sound, heat and kinetic energy.
Correct Answer: Book
Explanation:
The objects through which light cannot pass are called as Opaque objects. Some objects allow some light to pass through them and are called as Translucent objects. The objects which allow all the light to pass through them are called as Transparent objects.
Here in the given options Book is an example of opaque object as it does not allow light to pass through it. Water is transparent object and notebook paper and sun glasses are examples of translucent objects.
Correct Answer: Anemometer
Correct Answer: Surge protector
Correct Answer: Nichrome
Correct Answer: pressure
Correct Answer: Velocity
Correct Answer: First law
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