GENERAL SCIENCE PHYSICS ONE LINERS FOR TNPSC UPSC SSC SET 012
111). The swing of a spinning cricket ball in the air can be explained on the basis of
A). sudden change in wind direction
B). buoyancy of air
C). turbulence caused by wind
D). Bernoulli's theorem
Answer: Bernoulli's theorem
112). A train goes past a railway station at a high speed. A young boy standing on the edge of the platform is likely to
A). remain unaffected
B). fall away from the train
C). fall towards the train
D). fall away from or towards the train depending on its speed
Answer: fall towards the train
113). In a sprayer the liquid rises in the tube due to
A). capillarity
B). evaporation
C). lower pressure at the upper end
D). unknown reasons
Answer: lower pressure at the upper end
114). A football bounces when it falls on the ground because
A). it is made up of rubber
B). it is hollow
C). it is very light and is able to overcome the resistance of air
D). of its property of elasticity
Answer: of its property of elasticity
115). Assertion: The acceleration due to gravity increases with height above the earth's surface
Reason: Gravitational force decreases with height
A). both A and R are correct and R explains A .
B). both A and R are correct, but R does not explain A
C). A is right, R-is wrong
D). A is wrong, R is right
Answer: A is wrong, R is right
116). Assertion: Objects appear 'weightless' inside an orbiting spacecraft.
Reason: Objects in circular motion experience centripetal force
A). both A and R are correct and R explains A .
B). both A and R are correct, but R does not explain A
C). A is right, R-is wrong
D). A is wrong, R is right
Answer: both A and R are correct, but R does not explain A
117). Assertion: The earth revolves around the sun in an elliptical orbit.
Reason: The sun always attracts the earth with the same force.
A). both A and R are correct and R explains A .
B). both A and R are correct, but R does not explain A
C). A is right, R-is wrong
D). A is wrong, R is right
Answer: A is right, R-is wrong
118). Assertion: A steel needle can be made to float on water
Reason: When an object is immersed in water it experiences an upthrust.
A). both A and R are correct and R explains A .
B). both A and R are correct, but R does not explain A
C). A is right, R-is wrong
D). A is wrong, R is right
Answer: both A and R are correct, but R does not explain A
119). The science dealing with the study of phenomena at very low temperatures is known as
A). refrigenics
B). cytogenics
C). frozenics
D). cryogenics
Answer: cryogenics
120). A boy throws a ball upwards and catches it after 4s. Which one of the following speed-time graphs represents the motion of the ball?
A). (a) Time (s)
A). sudden change in wind direction
B). buoyancy of air
C). turbulence caused by wind
D). Bernoulli's theorem
Answer: Bernoulli's theorem
112). A train goes past a railway station at a high speed. A young boy standing on the edge of the platform is likely to
A). remain unaffected
B). fall away from the train
C). fall towards the train
D). fall away from or towards the train depending on its speed
Answer: fall towards the train
113). In a sprayer the liquid rises in the tube due to
A). capillarity
B). evaporation
C). lower pressure at the upper end
D). unknown reasons
Answer: lower pressure at the upper end
114). A football bounces when it falls on the ground because
A). it is made up of rubber
B). it is hollow
C). it is very light and is able to overcome the resistance of air
D). of its property of elasticity
Answer: of its property of elasticity
115). Assertion: The acceleration due to gravity increases with height above the earth's surface
Reason: Gravitational force decreases with height
A). both A and R are correct and R explains A .
B). both A and R are correct, but R does not explain A
C). A is right, R-is wrong
D). A is wrong, R is right
Answer: A is wrong, R is right
116). Assertion: Objects appear 'weightless' inside an orbiting spacecraft.
Reason: Objects in circular motion experience centripetal force
A). both A and R are correct and R explains A .
B). both A and R are correct, but R does not explain A
C). A is right, R-is wrong
D). A is wrong, R is right
Answer: both A and R are correct, but R does not explain A
117). Assertion: The earth revolves around the sun in an elliptical orbit.
Reason: The sun always attracts the earth with the same force.
A). both A and R are correct and R explains A .
B). both A and R are correct, but R does not explain A
C). A is right, R-is wrong
D). A is wrong, R is right
Answer: A is right, R-is wrong
118). Assertion: A steel needle can be made to float on water
Reason: When an object is immersed in water it experiences an upthrust.
A). both A and R are correct and R explains A .
B). both A and R are correct, but R does not explain A
C). A is right, R-is wrong
D). A is wrong, R is right
Answer: both A and R are correct, but R does not explain A
119). The science dealing with the study of phenomena at very low temperatures is known as
A). refrigenics
B). cytogenics
C). frozenics
D). cryogenics
Answer: cryogenics
120). A boy throws a ball upwards and catches it after 4s. Which one of the following speed-time graphs represents the motion of the ball?
A). (a) Time (s)
B). (b) Time (s)
C). (c) Time (s)
D). (d) Time (s)
Answer: (a) Time (s)
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