Physics GK Question
Quiz 3
Que: What is a neuron ?
(A) Basic unit of energy
(B) Particle released during radioactivity
(C) The anti-particle of neutron
(D) Basic unit of nervous system
Answer: (D) Basic unit of nervous system
Que: Matter waves are
(A) De Broglie waves
(B) Electromagnetic waves
(C) Transverse waves
(D) Longitudinal waves
Answer: A) De Broglie waves
Que: When the milk is churned vigorously the cream from
it is separated out due to
(A) Centripetal force
(B) Gravitational force
(C) Frictional force
(D) Centrifugal force
Answer: (D) Centrifugal force
Que: Gas thermometers are more sensitive than the liquid
thermometers because the gases
(A) Have large coefficient of expansion
(B) Are lighter
(C) Have low specific heat
(D) Have high specific heat
Answer: (A) Have large coefficient of expansion
Que: Optical fibers are based on
(A) Interference
(B) Dispersion
(C) Diffraction
(D) Total internal reflection
Answer: (D) Total internal reflection
Que : ‘Mirage’ is an example of
(A) Refraction of light only
(B) Total internal reflection of light only
(C) Refraction and total internal reflection of light
(D) Dispersion of light only
Answer: (C) Refraction and total internal reflection of light
Que: The phenomenon of light associated with the
appearance of blue color of the sky is
(A) Interference
(B)
Reflection
(C) Refraction
(D)
Scattering
Answer: (D) Scattering
Que: A balloon filled with helium rises in air because
(A) Air exerts an upward force on the balloon
(B) The balloon is weightless
(C) Helium is less dense than air
(D) Helium pushes down on the air below the balloon
Answer: (C) Helium is less dense than air
Que: One can distinguish a telescope from a microscope
by observing
(A) Length
(B) Colour
(C) Size of the lens
(D) Length and size of the lens
Answer: (D) Length and size of the lens
Que: The sound produced by a bat is
(A) Audible
(B)
Subsonic
(C) Infrasonic
(D)
Ultrasonic
Answer: (D) Ultrasonic
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