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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-18
Q1. An oil drop spreads over water because
(a) oil Is lighter than water
(b) oil is more viscous
(c) oil does not mix with water
(d) surface tension of oil is much smaller than that of water
Ans. : d
Q2. The device which convert AC to DC is :
(a) Oscillator
(b) Amplifier
(c) Rectifier
(d) None of these
Ans. : c
Q3. Knot is a measure of
(a) The speed of ship
(b) The curvature of spherical objects
(c) Solar radiation
(d) Intensity of earthquake shock
Ans. : a
Q4. When the main switch of the house is put off it disconnects the
(a) live wire only
(b) live wire and the earth wire
(c) live wire and the neutral wire
(d) earth wire and the neutral wire
Ans. : c
Q5. Heat from the sun reaches earth by the process of
(a) Conduction
(b) Convection
(c) Radiation
(d) All of the above
Ans. : c
Q6. Which of the following produces more severe bums?
(a) Boiling water
(b) Hot water
(c) Steam
(d) Melting iceberg
Ans. : c
Q7. The sudden fall of atmospheric pressure indicates
(a) fair weather
(b) storm
(c) rain
(d) cold weather
Ans. : b
Q8. Magnetism in materials is due to
(a) electrons at rest
(b) circular motion of electrons
(c) protons at rest
(d) all neutrons at rest
Ans. : b
Q9. Short sight in human eye can be corrected by using proper
(a) convex lens
(b) concave lens
(c) cylindrical lens
(d) bifocal lens
Ans. : b
Q10. What is the reason for twinkling of stars?
(a) Dispersion of light
(b) Total internal reflection
(c) Atmospheric reflection
(d) Atmospheric refraction
Ans. : d
