Physics Practice MCQ Page 23
Multiple Choice questions for Physics in the sets of 10 each on one page with questions and answers. All sets are useful in the preparation of subject tests for employment or admission.
Question: 547 Three identical capacitance "C" each are connected in series and this combination is connected in parallel with one more identical capacitance. The capacitance of the whole combination is
- 3C
- 3/C
- 4C/3
- 3C/4
Question: 548 When a conductor situated in a dielectric is charged the energy resides
- only on the dielectric
- only on medium surrounding charge
- on the dielectric and medium both
- only on the dielectric or medium surrounding charge
Question: 549 Which one of the following is not a statement of the Krichhoff's law?
- the algebraic sum of the currents any junction in a circuit is zero
- in any closed circuit, algebraic sum of e.m.f's is zero
- Resistance of conductor is equal to the ration of voltage and current in that conductor
- the current going into a junction is equal to the current leaving the junction
Question: 550 In an AC circuit, the current
- is in phase with voltage
- leads the voltage
- lags the voltage
- any of the above depending upon the circumstances
Question: 551 According to Faraday's law, the total charge induced in a conductor that is moved in a magnetic field depends upon
- initial magnetic flux
- final magnetic flux
- rate of change of magnetic flux
- change in magnetic flux
Question: 552 A steel wire of length "L" has a magnetic moment "M". It is then bent into a semi circular arc. The new magnetic moment is
- M
- 2M/Π
- M/Π
- MΠ
Question: 553 Earth's magnetic field always has a horizontal component, except at
- the equator
- the geographical poles
- the magnetic poles
- nothing can be said at present
Question: 554 A resistance of 5 ohm is placed in series with an inductance of 200 mH and capacitance of 30 pf. If the resonant frequency is 50 c/s, what is the current at resonance, for a 100 V e.m.f source
- 200 m amp
- 20 amp
- 2 amp
- 200 amp
Question: 555 Magnetic flux is
- a scalar quantity
- a vector quantity
- neither scalar nor vector
- none of the above
Question: 556 A magnetic material which is prove to spontaneous magnetisation at sufficiently low temperature and whose magnetic moment due to electron spins in bulk are all oriented along an applied magnetic field are called
- ferromagnetic
- anti-ferromagnetic
- paramagnetic
- diamagneitc
Question: 557 If we reduce the magnetic field to half its value and double the radius of dees in a cyclotron, how will the kinetic energy of accelerated particles be effected?
- Become 8 times
- Becomes 4 times
- Doubles
- No change
Question: 558 The Balmer series is found in the spectrum of
- oxygen
- nitrogen
- hydrogen
- none of these
Answers to the questions of Physics on this page
Following list gives the correct choice for the answer of the Physics mcqs.
547 . C
548 . B
549 . C
550 . D
551 . C
552 . B
553 . C
554 . B
555 . B
556 . B
557 . D
558 . C
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