Physics problems
- 1. A dynamometer wattmeter can be used for
Options- A. Only Direct Current
- B. Only Active Current
- C. Both A & B
- D. None of the above Also asked in: AIEEE, Bank Exams, CAT, Analyst, Bank Clerk, Bank PO
Correct Answer: Both A & B
- 2. Number of basic SI unit is
Options- A. 4
- B. 7
- C. 6
- D. 5 Discuss
Correct Answer: 7
- 3. Curie is the unit of
Options- A. temparature
- B. radio activity
- C. heat
- D. energy Discuss
Correct Answer: radio activity
- 4. Which of the following physical quantities have the same dimensions
Options- A. momentum and impulse
- B. power and young modulus
- C. Energy and angular Momentum
- D. force constant and moment of inertia Discuss
Correct Answer: momentum and impulse
- 5. Which one of the following groups have quantities that do not have the same dimensions
Options- A. pressure, stress
- B. velocity, speed
- C. force, impulse
- D. work, energy Discuss
Correct Answer: force, impulse
- 6. Learned indian classical vocalists do not like the accompaniment of a harmonium because
Options- A. tempered scale is used in the harmonium
- B. diatonic scale is used in the harmonium
- C. notes of the harmonium are too shrill
- D. intensity of the notes of the harmonium is too large Discuss
Correct Answer: tempered scale is used in the harmonium
- 7. Which is the strongest force in the universe? Discuss
Correct Answer: Nuclear Force
- 8. Which is the liquid that shows Capillary fall? Discuss
Correct Answer: Mercury
- 9. A car parked in the sun with its windows closed gets terribly hot inside. This is due to
Options- A. the heat emitted by the engine
- B. the greenhouse effect
- C. the good conducting power of the metal body
- D. the double layered wind shield Discuss
Correct Answer: the greenhouse effect
Explanation:
The green house effect. The waves of smaller wavelength from the sun enter inside the car through the glass windows and are absorbed. The waves of larger wavelength emitted from inside cannot get out through the glass, but remain inside and make it terribly hot.
- 10. During thunderstorm you are travelling in a car. To protect yourself from the lightning you will have to
Options- A. remain in the car
- B. get out of the car and lie flat in the ground
- C. abandon the car and take shelter under a nearby tree
- D. touch the nearest electric pole Discuss
Correct Answer: remain in the car
Explanation:
The Whole car - the body and inside - can be considered to be a hallow conductor. During the thunderstorm the body - i.e, the outside- gets a charge but there will be no charge inside. so the inside is safe.
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