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In this website each webpage contains minimum 10 mcqs and maximum upto 30 mcqs (objective type questions), one liner questions etc.
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Physics MCQs | Objective Type Questions SET-23
Q1. Why two thin shirts can keep us warmer than a single thick shirt in winter?
(a) Two thin shirts become thicker so prevent transmission of heat
(b) Air layer between two shirts works as good conductor
(c) Air layer between two shirts behaves like insulating media
(d) No radiation of heat takes place
Ans. : (c) Air layer between two shirts behaves like insulating media
Q2. Which layer of the earth's atmosphere reflect back the radio waves to the earth's surface?
(a) ionosphere
(b) stratosphere
(c) mesosphere
(d) exosphere
Ans. : (a) ionosphere
Q3. Sound cannot pass through
(a) water
(b) steel
(c) air
(d) vacuum
Ans. : (d) vacuum
Q4. In a photocell light energy is converted into
(a) potential energy
(b) chemical energy
(c) heat energy
(d) electrical energy
Ans. : (d) electrical energy
Q5. A storm is predicted if atmospheric pressure
(a) rises suddenly
(b) rises gradually
(c) falls suddenly
(d) falls gradually
Ans. : (c) falls suddenly
Q6. What should a person on a freely rotating turn table do to decrease his (angular) speed?
(a) Bring his hands together
(b) Raise his hands up
(c) Spread his hands outwards
(d) Sit down with raised hands
Ans. : (c) Spread his hands outwards
Q7. Which of the following celestial bodies contains abundant quantities of helium3 a potential source of energy?
(a) Earth
(b) Moon
(c) Venus
(d) Saturn
Ans. : (b) Moon
Q8. Smog is a combination of
(a) Air and water vapours
(b) Water and smoke
(c) Fire and water
(d) smoke and fog
Ans. : (d) smoke and fog
Q9. Which of the following circuit elements is used to block DC in an electronic circuit?
(a) Resistances
(b) Capacitance
(c) Inductance
(d) Diode
Ans. : (b) Capacitance
Q10. Spectacles used for viewing 3D films have
(a) Bifocal lens
(b) Convex lens
(c) Concave lens
(d) Polaroid's
Ans. : (d) Polaroid's
