GENERAL SCIENCE PHYSICS ONE LINERS FOR TNPSC UPSC SSC SET 089

GENERAL SCIENCE PHYSICS ONE LINERS FOR TNPSC UPSC SSC SET 089

881). The defect of short sight
A). concave lens
B). convex lens
C). spherical lens
D). cylindrical lens

Answer: concave lens


   
882). Mirage is due to the phenomenon of
A). reflection
B). refraction
C). total internal reflection
D). diffraction

Answer: total internal reflection


   
883). A person can jump higher at the moon's surface than on the earth's surface. Since,
A). the moon's surface is rough
B). the temperature of the moon is less
C). the moon has no atmosphere
D). the value of acceleration due to gravity on the moon's surface is less

Answer: the value of acceleration due to gravity on the moon's surface is less


   
884). Rising or setting sun appears reddish due to the fact that
A). the sun is colder at sunrise and sunset
B). diffraction causes red rays to reach the earth at sunrise and sunset
C). reflection of light rays takes place at sunrise and sunset
D). scattering of light rays takes place at sunrise and sunset

Answer: scattering of light rays takes place at sunrise and sunset


   
885). The nature of fuse wire is
A). high resistance and low melting point
B). high resistance and high melting point
C). low resistance and high melting point
D). low resistance and low melting point

Answer: high resistance and low melting point


 

886). Heat waves are otherwise known as
A). Infra red rays
B). Ultra-violet waves
C). Solar radiation
D). X-rays

Answer: Infra red rays


   
887). The time taken by the light from the nearest star alpha - centauri to reach the earth is
A). 4.3 years
B). 3.1 years
C). 2.2 years
D). 1 year 2 months

Answer: 4.3 years


   
888). When an object is transferred from the moon to the earth
A). its weight decreases and its mass increases on the earth
B). its weight increases and its mass decreases on the earth
C). its weight and mass remain constant on the earth
D). its weight increases and its mass remains constant on the earth

Answer: its weight increases and its mass remains constant on the earth


   
889). On adding salt to water, the boiling point and freezing point of water will
A). increase
B). increase and decrease respectively
C). decrease
D). decrease and increase respectively

Answer: increase and decrease respectively


   
890). 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 minimise friction
D). to go fast and save fuel

Answer: to avoid skidding and to minimise friction