Physics Practice MCQ Page 24

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: 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?
  1. Become 8 times
  2. Becomes 4 times
  3. Doubles
  4. No change
Question: 558   The Balmer series is found in the spectrum of
  1. oxygen
  2. nitrogen
  3. hydrogen
  4. none of these
Question: 559   Choose the correct statement:
  1. the maximum frequency of continuous X-rays does not depend upon electrons.
  2. The frequencies of characteristic X-rays depend upon the energy of te incident electrons
  3. All the X-rays emitted have one frequency determined by te energy of the incident electrons
  4. The maximum frequency of continuous X-rays depend upon the energy of incident electrons but the energy of charactertistic X-rays does not depend upont it
Question: 560   The compton effect in X-rays proves that
  1. the electrons have wave property
  2. the X-rays have particle characteristic
  3. the X-rays have wave properties
  4. none of these
Question: 561   Which of the following is a main feature of photo-electric effect?
  1. Metals become conducting under the action of heat
  2. Electrons are rejected when light falls on some metals
  3. Electrons are emittes by heating of metals with
  4. Photographic images are formed under action of light rays
Question: 562   The control rods used in nuclear reactions are made of
  1. stainless steel
  2. graphite
  3. cadmium
  4. plutonium
Question: 563   Who was awarded Nobel prize for first artificial atomic transmutation?
  1. Yukawa
  2. Rutherford
  3. Chadwick
  4. none of these
Question: 564   When alpha particles are passed through a thin foil
  1. they all pass straight through
  2. they are all deflected
  3. most of them are deflected
  4. most of them pass straight through
Question: 565   Three hypothetical elementary particles with three-corresponding anti-particles which have been postulated by Murray-Gall Mann as the bases of all matter are
  1. quartz
  2. nuclear isomers
  3. anti-matters
  4. none of these
Question: 566   In which of the following does the nuclear force exist?
  1. Nueton-neutron
  2. Proton-proton
  3. Neutron-proton
  4. All are true
Question: 567   The charge on a hyperon
  1. is always negative
  2. is always positive
  3. may be negative or positive
  4. is zero
Question: 568   Photoelectric effect supports quantum nature of light because (A). there is minimum frequency of light below which no photoelectric are emitted (B). the maximum kinetic energy of photoelectric depends only on the frequency of light and not on its intensity (C).even when the metal surface is faintly illuminated, the photo electrons leave the surface immediately (D). electric charge of the photo electrons is quantized which of the above is/ are correct?
  1. only A is correct
  2. Both A and B is correct
  3. A.B and C is correct
  4. all the above are correct

Answers to the questions of Physics on this page

Following list gives the correct choice for the answer of the Physics mcqs.
557 . D       558 . C       559 . D       560 . C       561 . C       562 . C       563 . A       564 . D       565 . C       566 . D       567 . C       568 . D      

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