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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-38
Q21. The Important unit of a microprocessor Is
(a) ALU
(b) array of registers
(c) control unit
(d) All of the above
Ans. : (d) All of the above
Q2. Which one of the following has the highest value of specific heat?
(a) Glass
(b) Copper
(c) Lead
(d) Water
Ans. : (d) Water
Q3. The device used for locating submerged objects under sea is
(a) sonar
(b) radar
(c) laser
(d) maser
Ans. : (a) sonar
Q4. The metal whose electrical conductivity is more is
(a) copper
(b) aluminum
(c) silver
(d) lead
Ans. : (c) silver
Q5. What happens to a liquid when the vapour pressure equals the atmospheric pressure?
(a) The liquid cools
(b) The liquid boils
(c) No change
(d) The liquid evaporates
Ans. : (b) The liquid boils
Q6. In nuclear reactor heavy water is used as
(a) coolant
(b) fuel
(c) moderator
(d) atomic smasher
Ans. : (c) moderator
Q7. Water boils at a lower temperature on the hills because
(a) it is cold on the hills
(b) there is less carbon dioxide on the hills
(c) there is a decrease in air pressure on the hills
(d) There is less oxygen
Ans. : (c) there is a decrease in air pressure on the hills
Q8. Why do birds not have respiratory trouble at the time of flying at high altitude?
(a) Their lungs are very large
(b) They fly Inactively
(c) They have extra air sacs
(d) They use less oxygen
Ans. : (c) They have extra air sacs
Q9. The temperature which has the same reading on both Fahrenheit and Celsius scales is
(a) 40°
(b) -40⁰
(c) 34°
(d) 140°
Ans. : (b) -40⁰
Q10. Kilowatt hour is the unit of
(a) Energy
(b) Power
(c) Force
(d) Momentum
Ans. : (a) Energy
