General Science - Physics MCQs


Albert Einstein was awarded Nobel Prize for his path-breaking research and formulation of the:

[A] Theory of Relavitity
[B] Laws of Photo-Electric Effect
[C] Principle of Wave-Particle Duality
[D] Theory of Critical Opalescence

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Which one of the following types of Laser is used in Laser Printers?

[A] Semiconductor laser
[B] Excimer Laser
[C] Dye Laser
[D] Gas Laser

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The power of a lens is measured in :

[A] diopters
[B] aeon
[C] lumen
[D] candela

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The television technology in which a new form of light-emitting crystals which can be printed onto flexible plastic sheets to produce a paper-thin display that can be rolled up and carried in a pocket is:

[C] Pixel Plus
[D] Slingbox

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Crystals of which of the following naturally-occuring substance exhibits both ‘pyroelectric’ and ‘piezoelectric’ properties making it versatile for application in the field of electronics?

[A] Quartz
[B] Mica
[C] Topaz
[D] grapite

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Which of the following statements is not true regarding LASER?

[A] A LASER is a device that emits light through a process of optical amplification .
[B] LASER beams can be focused to very tiny spots, achieving a very high irradiance.
[C] The emitted LASER light is notable for its high degree of dispersive power unattainable using other technologies.
[D] LASER light is used in bar-code scanners

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If a moving body turns its speed to 1.5 times, what will be the impact on its kinetic energy?

[A] will become 1.5 times
[B] will become 3 times
[C] will become 2.25 times
[D] will become 6 times

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Two Flat mirrors are placed at an angle of 60° from each other. How many images will be formed of a Candle placed in between them?

[A] 3
[B] 4
[C] 5
[D] 6

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A tourist, who plans to visit a hill station located at very high altitude also wishes to take along his Television Set. In this context, consider the following:

  1. LCD TV
  2. Plasma TV
  3. Cathode Ray Tube TV

Which among the above are expected to work properly at very high altitudes?

[A] Only 1
[B] 1 & 2
[C] 1 & 3
[D] 2 & 3

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If an egg with shell is placed in a microwave oven, which among the following would most likely happen?

[A] The egg will not get warmed
[B] The egg will get cooked slowly similar to a boiled egg
[C] The egg shell will explode
[D] The egg shell becomes yellow

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