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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-22
Q1. We always see the same face of the moon because
(a) It is smaller than the earth
(b) it revolves on its axis in a direction opposite to that of the earth
(c) it takes equal time for revolution around the earth and rotation on its own axis
(d) it rotates at the same speed as the earth around the sun
Ans. : (c) it takes equal time for revolution around the earth and rotation on its own axis
Q2. Water pipes in hilly areas often burst on a cold frosty night because
(a) the material of which pipes are made contracts due to cold and so breaks
(b) water in the pipes freezes and on freezing water expands so pipes break
(c) frost makes the pipes rusty so they break
(d) None of these
Ans. : (b) water in the pipes freezes and on freezing water expands so pipes break
Q3. A parachute descends slowly whereas a stone dropped from the same Height falls rapidly because
(a) stone is heavier than parachute
(b) special mechanisms are present in parachute
(c) a parachute has a larger surface area and air resistance is more
(d) None of these
Ans. : (c) a parachute has a larger surface area and air resistance is more
Q4. Which of the following instruments is used to measure humility?
(a) Kata Thermometer
(b) Anemometer
(c) Sling Psychomotor
(d) Clinical Thermometer
Ans. : (c) Sling Psychomotor
Q5. The type of mirrors used in the headlamp of cars is
(a) parabolic concave
(b) plane
(c) spherical convex
(d) cylindrical concave
Ans. : (a) parabolic concave
Q6. The reason for a swimming pool to appear less deep than the actual depth is
(a) refraction
(b) light scattering
(c) reflection
(d) interference
Ans. : (a) refraction
Q7. Alternating current is converted into direct current by a
(a) transformer
(b) dynamo
(c) oscillator
(d) rectifier
Ans. : (d) rectifier
Q8. Which of the following is most elastic?
(a) Rubber
(b) Wet clay
(c) Steel
(d) Plastic
Ans. : (c) Steel
Q9. When a person walking in bright Sunlight enters a dark room he is not able to see clearly for a little while because
(a) the eye muscles cannot immediately adjust the focal length of the eye lens.
(b) the retina retains the bright images for sometime and becomes momentarily insensitive.
(c) the iris is unable to contract the pupil immediately
(d) the iris is unable to dilate the pupil immediately
Ans. : (d) the iris is unable to dilate the pupil immediately
Q10. The swing of a spinning cricket ball in air can be explained the basis of
(a) Sudden change in wind direction.
(b) Buoyancy of air.
(c) Turbulence caused by wind.
(d) Bernoulli's theorem.
Ans. : (c) Turbulence caused by wind.
