Discussion
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- Question
Why the Earth is having its own atmosphere ?
Options- A. Winds
- B. Clouds
- C. Gravity
- D. Rotation of the Earth
- Correct Answer
- Gravity
- 1. What is the name of the device used to convert alternating current into direct current ?
Options- A. Ammeter
- B. Galvanometer
- C. Rectifier
- D. Transformer Discuss
- 2. What is the phenomenon which established the transverse nature of light ?
Options- A. Reflection
- B. Interference
- C. Diffraction
- D. Polarisation Discuss
- 3. In the context of non-conventional energy, what is the meaning of 'OTE' ?
Options- A. Ocean Tidal Energy
- B. Ocean Thermal Energy
- C. Ocean Tidal Electricity
- D. Other Thermal Energy Discuss
- 4. If speed of rotation of the earth increases, the weight of the body
Options- A. decreases
- B. B)
- C. C)
- D. D) Discuss
- 5. Which of the following waves cannot be polarised?
Options- A. Radio
- B. Ultra violet
- C. Infrared
- D. Ultrasonic Discuss
- 6. At boiling point of liquids , its
Options- A. Temperature increases
- B. Atmospheric pressure increases
- C. Temperature remains constant
- D. Vapour pressure decreases Discuss
- 7. 'Parsec' is the unit measurement of
Options- A. Density of stars
- B. Astronomical distance
- C. Brightness of heavenly bodies
- D. Orbital velocity of giant stars Discuss
- 8. The phenomenon of change in direction of light when it passes from one medium to another is called
Options- A. Propagation
- B. Reflection
- C. Refraction
- D. Dispersion Discuss
- 9. Why does a cannon recoil after firing ?
Options- A. Conservation of energy
- B. Backward thrust of gases produced
- C. Newton's third law of motion
- D. Newton's first law of motion Discuss
- 10. What type of force acts on a car moving around a curve?
Options- A. Centrifugal force
- B. Cohesive force
- C. Centripetal force
- D. Gravitational force Discuss
Physics problems
Search Results
Correct Answer: Rectifier
Correct Answer: Polarisation
Correct Answer: Ocean Thermal Energy
Correct Answer: decreases
Correct Answer: Ultrasonic
Correct Answer: Temperature remains constant
Correct Answer: Astronomical distance
Correct Answer: Refraction
Correct Answer: Newton's third law of motion
Correct Answer: Centripetal force
Explanation:
It is a force that acts on a body moving in a circular path and is directed towards the centre around which the body is moving is called as Centripetal force.
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