Physics problems
- 1. What is the phenomenon which established the transverse nature of light ?
Options- A. Reflection
- B. Interference
- C. Diffraction
- D. Polarisation Also asked in: Bank Exams
Correct Answer: Polarisation
- 2. What is the name of the device used to convert alternating current into direct current ?
Options- A. Ammeter
- B. Galvanometer
- C. Rectifier
- D. Transformer Also asked in: Bank Exams
Correct Answer: Rectifier
- 3. Why the Earth is having its own atmosphere ?
Options- A. Winds
- B. Clouds
- C. Gravity
- D. Rotation of the Earth Also asked in: Bank Exams
Correct Answer: Gravity
- 4. At boiling point of liquids , its
Options- A. Temperature increases
- B. Atmospheric pressure increases
- C. Temperature remains constant
- D. Vapour pressure decreases Also asked in: Bank Exams
Correct Answer: Temperature remains constant
- 5. '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 Also asked in: Bank Exams
Correct Answer: Astronomical distance
- 6. 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 Also asked in: Bank Exams
Correct Answer: Refraction
- 7. 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 Also asked in: Bank Exams
Correct Answer: Newton's third law of motion
- 8. 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 Also asked in: AIEEE, Bank Exams, CAT
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.
- 9. Which phenomenon is responsible for the echo of sound wave?
Options- A. Reflection
- B. Refraction
- C. Interference
- D. Polarisation Also asked in: Bank Exams
Correct Answer: Reflection
- 10. If an object moves in a circular path with uniform ________, its motion is called uniform circular motion.
Options- A. speed
- B. Time
- C. Velocity
- D. Acceleration Also asked in: Bank Exams
Correct Answer: speed
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