Discussion
Home ‣ General Knowledge ‣ Physics Comments
- Question
Rectifiers are used to convert
Options- A. Direct current to Alternating current
- B. Alternating current to Direct current
- C. high voltage to low voltage
- D. low voltage to high voltage
- Correct Answer
- Alternating current to Direct current
- 1. Metals are good conductors of electricity because
Options- A. they contain free electrons
- B. the atoms are lightly packed
- C. they have high melting point
- D. All of the above Discuss
- 2. Intensity of sound at a point is ____ its distance from the source.
Options- A. directly proportional to
- B. inversely proportional to
- C. directly proportional to square of
- D. inversely proportional to square of Discuss
- 3. Planets are
Options- A. luminous heavenly bodies revolving around a star
- B. non-luminous heavenly bodies
- C. luminous heavenly bodies that twinkle
- D. luminous heavenly bodies that do not twinkle Discuss
- 4. On a rainy day, small oil films on water show brilliant colours. This is due to
Options- A. dispersion
- B. interference
- C. diffraction
- D. polarization Discuss
- 5. Sound produced at a point is heard by a person after 5 second, while the same sound is heard by another person after 6 seconds. If the speed of sound is 300 m/s, what could be the maximum and minimum distances between the two persons?
Options- A. 1.8 km, 0.15 km
- B. 2.2 km, 0.20 km
- C. 2.8 km, 0.25 km
- D. 3.3 km, 0.30 km Discuss
- 6. Solar eclipse will take place when
Options- A. the sun is between the moon and the earth
- B. the earth is between the moon and the sun
- C. the moon is between the sun and the earth
- D. the moon does not lie on the line joining the sun and the earth Discuss
- 7. Materials for rain-proof coats and tents owe their water-proof properties to
Options- A. surface tension
- B. viscosity
- C. specific gravity
- D. elasticity Discuss
- 8. On a stationary sail boat, air is blown from a fan attached to the boat. The boat
Options- A. moves in opposite direction in which the air is blown
- B. does not move
- C. moves in the same direction in which air blows
- D. spins around Discuss
- 9. Rainbow is due to
Options- A. absorption of sunlight in minute water droplets
- B. diffusion of sunlight through water droplets
- C. ionisation of water deposits
- D. refraction and reflection of sunlight by water droplets Discuss
- 10. Superconductors are substances which
Options- A. conduct electricity at low temperature
- B. offer high resistance to the flow of current
- C. offer no resistance to the flow of electricity
- D. conduct electricity at high temperatures Discuss
Physics problems
Search Results
Correct Answer: they contain free electrons
Correct Answer: inversely proportional to square of
Correct Answer: non-luminous heavenly bodies
Correct Answer: interference
Correct Answer: 3.3 km, 0.30 km
Correct Answer: the moon is between the sun and the earth
Correct Answer: surface tension
Correct Answer: does not move
Correct Answer: refraction and reflection of sunlight by water droplets
Correct Answer: offer no resistance to the flow of electricity
Comments
There are no comments.More in General Knowledge:
Programming
Copyright ©CuriousTab. All rights reserved.