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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-33
Q1. Vehicle tyres are inflated properly
(a) to ensure smooth running.
(b) to allow the vehicle to take more load.
(c) to avoid skidding and to minimize friction.
(d) to go fast and save fuel.
Ans. : (c) to avoid skidding and to minimize friction.
Q2. Refrigeration is a process which
(a) kills bacteria
(b) slows down the bacterial growth
(c) Inactivates the bacteria
(d) Plasmolyses the bacteria
Ans. : (b) slows down the bacterial growth
Q3. Mud houses are cooler in summers and warmer in winters as compared to brick houses because
(a) mud is a good conductor
(b) mud is a bad conductor
(c) mud is a poor insulator
(d) evaporation of water causes cooling in summers and sunlight coming through holes causes warming in winters
Ans. : (b) mud is a bad conductor
Q4. After long periods of use a grey spot develops on the inside of a bulb. This is because
(a) the tungsten filament evaporates and collects there
(b) the heat of the bulb scorches the glass at the top
(c) dust inside the bulb condenses on the top
(d) glass undergoes a change due to the heat
Ans. : (c) dust inside the bulb condenses on the top
Q5. Should cars have bumpers that collapse under impact?
(a) Yes, since the offending car should get damaged and pay for the mistake
(b) No, since it would be very expensive to get the car repaired
(c) No, since the colliding car would then ram into the occupants and kill them
(d) Yes, since they help to absorb the impact of a collision and keep the occupants safe
Ans. : (d) Yes, since they help to absorb the impact of a collision and keep the occupants safe
Q6. Ice cubes are added to a glass of pure water and a glass of pure alcohol. The ice would be
(a) at a higher level in water
(b) at a higher level in alcohol
(c) at the same level in both
(d) floating in alcohol and sinking In water
Ans. : (a) at a higher level in water
Q7. A person wears spectacles with concave lenses. It means that normally (when not using glasses) the image of distant objects is focused in his eyes
(a) behind the retina
(b) in front of the retina
(c) on the retina
(d) on the blind spot
Ans. : (b) in front of the retina
Q8. What is the principle of a Life Jacket?
(a) lt provides oxygen to a drowning person
(b) It increases the volume of the person to keep him afloat
(c) It decreases the volume of the person to keep him afloat
(d) The person can sit on It like a raft
Ans. : (b) It increases the volume of the person to keep him afloat
Q9. Myopia is the same as
(a) Near sightedness
(b) Astigmatism
(c) Presbyopia
(d) Long sightedness
Ans. : (a) Near sightedness
Q10. Sun's heat reaches us by
(a) Conduction
(b) Convection
(c) Radiation
(d) Reflection
Ans. : (c) Radiation
