Physics Practice MCQ Page 37

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: 3761   In a series resonant circuit, the the current at resonance is
  1. maximum
  2. minimum
  3. zero
  4. some times maximum some times minimum
Question: 3762   According to Faraday's law, the total charge induced in a conductor that is moved in magnetic field depends upon
  1. initial magnetic flux
  2. final magnetic flux
  3. rate of change of magnetic flux
  4. change in magnetic flux
Question: 3763   Van de Graff generators are sometimes built horizontally because they
  1. are so small
  2. accelerate electrons
  3. accelerate protons
  4. none of these
Question: 3764   Two resistance 'x' and 'y' of 15 and 25 ohms respectively are connected across a battery of 5V, first in parallel and than in series. The heat produced is
  1. more in first case
  2. more in second case
  3. equal in both cases
  4. none is correct
Question: 3765   In any LCR circuit
  1. current lags the applied voltage
  2. current leads the applied voltage
  3. current sometimes leads and sometimes lags the applied voltage
Question: 3766   Choose the wrong statement
  1. temperature of inversion is that temperature at which the thermo e.m.f reverses sign
  2. neutral temperature is the temperature at which maximum thermo e.m.f is produced
  3. temperature of inversion depends upon the cold junction temperature
  4. temperature of inversion like neutral temperature is constant
Question: 3767   According to Faraday's law, the total change induced in a conductor that is moved in a magnetic field depends upon
  1. initial magnetic flux
  2. final magnetic flux
  3. rate of change of magnetic flux
  4. change in magnetic flux
Question: 3768   In rewland ring of annealed iron the winding has 100 turn/s when current in winding is 0.5 amperes, then H is
  1. 500
  2. 2000
  3. 5 × 10-4
  4. none of these
Question: 3769   Hall effect shows that majority of current carriers in a metal should be
  1. electrons
  2. holes
  3. positrons
  4. none of these
Question: 3770   In an A.C circuit the peak to peak voltage is 5 V and a peak to peak current of 5A is flowing. The power consumption is then given by
  1. 5W
  2. 30W
  3. 15W
  4. 10W
Question: 3771   Which of the following is established by Brafgg's Method?
  1. X-rays can neither be diffracted nor deflected by electric and magnetic fields
  2. X-rays are not electromagnetic in nature
  3. X-rays are electromagnetic in nature and can be diffracted
  4. X-rays are electromagnetic in nature and can be deflected by electric and magnetic fields.
Question: 3772   which of the following can exist only in integral multiples of h/2π, according to assumption of Bohr's theory?
  1. Principal quantum number
  2. linear
  3. momentum
  4. angular momentum
  5. azumuthal quantum number