GENERAL SCIENCE PHYSICS ONE LINERS FOR TNPSC UPSC SSC SET 048
471). At what temperature a body will not radiate any heat energy?
A). 0∘ C
B). 283∘ C
C). 100∘ C
D). 273∘ C
Answer: 273∘C
472). In a standing wave the distance between a node and adjacent antinode is
A). 3λ/2
B). λ/2
C). λ/4
D). 3λ/4
Answer: λ/4
473). A telescope and a microscope differ in that
A). both are different instruments
B). telescope has eyepiece with larger focal lengths that the objective
C). telescope has objective of large focal lengths and eyepiece of smaller focal lengths
D). none of these
Answer: telescope has objective of large focal lengths and eyepiece of smaller focal lengths
474). The centre of the Newton's rings pattern is dark since
A). the light undergoes a phase change π
B). the glass plate and the plane - convex lens are in contact with each other at the centre
C). the light undergoes a phase change 2Ï€
D). the light undergoes a phase change π/2
Answer: the light undergoes a phase change π
475). Galvanometer Can be converted into a voltmeter by using
A). a low resistance in series
B). a high resistance in series
C). a low resistance in parallel
D). a high resistance in parallel
Answer: a high resistance in series
476). The apparatus used in submarines to give clear view of the objects on the surface of the ocean or ground is known as
A). periscope
B). sextant
C). stereoscope
D). telescope
Answer: periscope
477). Which metal is commonly used for making an electromagnet?
A). copper
B). iron
C). nickel
D). cobalt
Answer: iron
478). Kilowatt hour is a unit of
A). energy
B). power
C). electric charge
D). current
Answer: power
479). Choke is used to
A). reduce the current in AC circuit
B). reduce the current in DC circuit
C). convert AC to DC
D). convert DC to AC
Answer: reduce the current in AC circuit
480). The ozone layer protects us from
A). ultra violet rays
B). radiowaves
C). visible radiation
D). infrared radiation
Answer: ultra violet rays
A). 0∘ C
B). 283∘ C
C). 100∘ C
D). 273∘ C
Answer: 273∘C
472). In a standing wave the distance between a node and adjacent antinode is
A). 3λ/2
B). λ/2
C). λ/4
D). 3λ/4
Answer: λ/4
473). A telescope and a microscope differ in that
A). both are different instruments
B). telescope has eyepiece with larger focal lengths that the objective
C). telescope has objective of large focal lengths and eyepiece of smaller focal lengths
D). none of these
Answer: telescope has objective of large focal lengths and eyepiece of smaller focal lengths
474). The centre of the Newton's rings pattern is dark since
A). the light undergoes a phase change π
B). the glass plate and the plane - convex lens are in contact with each other at the centre
C). the light undergoes a phase change 2Ï€
D). the light undergoes a phase change π/2
Answer: the light undergoes a phase change π
475). Galvanometer Can be converted into a voltmeter by using
A). a low resistance in series
B). a high resistance in series
C). a low resistance in parallel
D). a high resistance in parallel
Answer: a high resistance in series
476). The apparatus used in submarines to give clear view of the objects on the surface of the ocean or ground is known as
A). periscope
B). sextant
C). stereoscope
D). telescope
Answer: periscope
477). Which metal is commonly used for making an electromagnet?
A). copper
B). iron
C). nickel
D). cobalt
Answer: iron
478). Kilowatt hour is a unit of
A). energy
B). power
C). electric charge
D). current
Answer: power
479). Choke is used to
A). reduce the current in AC circuit
B). reduce the current in DC circuit
C). convert AC to DC
D). convert DC to AC
Answer: reduce the current in AC circuit
480). The ozone layer protects us from
A). ultra violet rays
B). radiowaves
C). visible radiation
D). infrared radiation
Answer: ultra violet rays
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