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Wednesday, June 24, 2020

GENERAL SCIENCE PHYSICS ONE LINERS FOR TNPSC UPSC SSC SET 058

GENERAL SCIENCE PHYSICS ONE LINERS FOR TNPSC UPSC SSC SET 058





571). Sun spots are
A). the mountains found on the surface of the sun
B). the dark patches having less temperature than the normal surface
C). ionized gas found near the solar surface
D). the magnetic storms on the surface of the sun

Answer: the magnetic storms on the surface of the sun


   
572). The radiation with highest energy is
A). UV
B). IR
C). X-ray
D). Visible

Answer: X-ray


   
573). A lift is falling freely after the suspension wire breaks. The weight of a person inside the lift would become
A). zero
B). unchanged
C). doubled
D). halved

Answer: zero

   
574). Which of the following actions will double the period of a simple pendulum?
A). double the length of the pendulum
B). double the mass of the bob
C). make the mass of the bob √2 times greater
D). make the pendulum four times long.

Answer: make the pendulum four times long.


   
575). What makes the hairs of shaving brush cling together?
A). viscosity
B). surface tension
C). cohesion
D). none of these

Answer: surface tension



576). Centripetal force needed to keep the moon in its orbit round the earth is provided by
A). gravitational pull of sun
B). gravitational pull of earth
C). rotation about its own axis
D). none of these

Answer: rotation about its own axis


   
577). Bats can fly in the dark without hitting anything because
A). they are flying mammals
B). their night vision is good
C). they are guided by ultrasonic waves produced by them
D). of no scientific reason

Answer: they are guided by ultrasonic waves produced by them


   
578). As a person moves closer to a plane mirror the size of the image formed by the mirror
A). increases
B). decreases
C). first increases and then decreases
D). remains the same

Answer: remains the same


   
579). Primary colours are
A). red, blue and yellow
B). blue, green and yellow
C). green, red and yellow
D). red, blue and green

Answer: red, blue and green


   
580). A pyrometer is used to measure
A). low temperature
B). high temperature
C). high pressure
D). low pressure

Answer: high temperature

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