Physics Practice MCQ Page 36
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: 3751 Spherical aberration is minimised when two plano-convex lenses are separated by a distance equal to
- 2d
- d
- d/2
- d/4
Question: 3752 When tuning fork is made to vibrate, vibrations of its two prongs
- are in phase
- have a phase difference of π
- have a phase difference of π/2
- have a phase difference of π/4
Question: 3753 Sky appears blue because
- there is more blue colour in sunlight than any other colour
- short waves are scattered more than the long waves by the atmosphere
- the eye is more sensitive to blue
- the atmosphere absorbs long wavelengths more than short wavelengths
Question: 3754 In interference and diffraction patterns experiments which of the following statement is true regarding fringe width?
- interference fringes in general are of equal width and diffraction fringes are never of the same width
- interference fringes are always of same width
- diffraction fringes are generally of same width
- both interference fringes and diffraction fringes may not be of the same width
Question: 3755 In Young's experiment of interference if a torch is used in place of sodium lamp, which of the following statements, is correct
- fringes will be produced as usual
- fringes will be produced for a moment and disappear
- fringes will not be produced at all
- coloured fringes will be produced
Question: 3756 Which is incorrect with reference to polarisation by reflection
- the degree of polarisation varies with the angle of incidence
- percentage of the polarising light in the reflected beam is the greatest at the angle of polarisation
- reflected light is plane polarised in the plane of incidence
- reflected light is plane polarised in the plane of incidence
Question: 3757 We know Huygen's eye-piece removes
- astigmatism
- chromatic aberration
- both chromatic aberration and spherical aberration
- none of these
Question: 3758 A capacitor using a dielectric coefficient 5 has a capacitance A. An identical capacitor using a dielectric whose coefficient is 20 ill have capacitance equal to
- 2A
- 4A
- 100A
- 10A
Question: 3759 The amount of charge with can be placed on a conductor does not deped on
- the dielectric strength of the surrounding medium
- its capacitance
- its potential
- its size or shape
Question: 3760 Which of the following is not a statement of Kirchoff's law?
- the algebraic sum of currents at any junction in a circuit, is zero
- in any closed circuit, algebraic sum of e.m.f's is zero
- resistance of a conductor is equal to the ratio of voltage and current in that conductor
- the current going into a junction is equal to the current leaving the junction
Question: 3761 In a series resonant circuit, the the current at resonance is
- maximum
- minimum
- zero
- 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
- initial magnetic flux
- final magnetic flux
- rate of change of magnetic flux
- change in magnetic flux
Answers to the questions of Physics on this page
Following list gives the correct choice for the answer of the Physics mcqs.
3751 . B
3752 . A
3753 . B
3754 . A
3755 . D
3756 . D
3757 . C
3758 . B
3759 . C
3760 . C
3761 . A
3762 . C
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MCQ for Practicing Subject Tests