Physics Practice MCQ Page 22

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: 537   Two thin lenses, one of focal length +20 cm and another of focal length -40 cm are in contact. The focal length of the combination is
  1. -20 cm
  2. 20 cm
  3. +40 cm
  4. -40 cm
Question: 538   The refractive index of glass with respect to red light is
  1. greater than with respect to blue light
  2. equal with respect to blue light
  3. less than with respect to blue light
  4. less than and equal to blue light
Question: 539   A short sighted person can see only those objects distinctly which lie between, 8 cm and 100 cms from the eye. The power of the spectacle lens required to see a distant object is
  1. -10 D
  2. +10 D
  3. -2 D
  4. -15 D
Question: 540   When viewed in white light scap bubbles show colours because of
  1. interference
  2. scattering
  3. diffraction
  4. dispersion
Question: 541   In the construction of Ramisden's eye piece, the eye lens forms the final image at
  1. infinity
  2. 2F
  3. between the two lenses
  4. a distance of distinct vision
Question: 542   for removal of spherial aberration we use a plano-convex lens with its convex surface
  1. towards the incident or emergent beam which ever is more parallel to principle axis
  2. towards any direction in principle axis but perpendicular to it
  3. towards the emergent beam
  4. towards the incident beam
Question: 543   The variation in focal length of a lens when we pass from the central portion to periphery is known as
  1. spherical aberration
  2. asti gmatism
  3. corna
  4. chromatic aberration
Question: 544   Epidiascope is made by combining
  1. a telescope and a microscope
  2. a binocular and a telescope
  3. a projection lantern and compound microscope
  4. a projection lantern and a simple microscope
Question: 545   LASER is a device for
  1. producing a beam of white light
  2. producing a beam of monochromatic and coherent light
  3. producing a beam of high intensity incoherent light
  4. producing highly penetrating X-rays
Question: 546   A light beam is said to be plane polarized when
  1. its vibrations are restricted to one plane
  2. its vibrations can take place in any plane
  3. its vibrations are stronger in one plane
  4. all are true
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
  1. 3C
  2. 3/C
  3. 4C/3
  4. 3C/4
Question: 548   When a conductor situated in a dielectric is charged the energy resides
  1. only on the dielectric
  2. only on medium surrounding charge
  3. on the dielectric and medium both
  4. only on the dielectric or medium surrounding charge

Answers to the questions of Physics on this page

Following list gives the correct choice for the answer of the Physics mcqs.
537 . C       538 . C       539 . A       540 . A       541 . B       542 . A       543 . B       544 . A       545 . B       546 . A       547 . C       548 . B      

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