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
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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