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Tuesday, June 23, 2020

GENERAL SCIENCE PHYSICS ONE LINERS FOR TNPSC UPSC SSC SET 002

GENERAL SCIENCE PHYSICS ONE LINERS FOR TNPSC UPSC SSC SET 002





11). On a rainy day, small oil films on water show brilliant colours. This is due to
A). dispersion
B). interference
C). diffraction
D). polarization

Answer: interference


   
12). Lux is the SI unit of
A). intensity of illumination
B). luminous efficiency
C). luminous flux
D). luminous intensity

Answer: intensity of illumination


   
13). Rectifiers are used to convert
A). Direct current to Alternating current
B). Alternating current to Direct current
C). high voltage to low voltage
D). low voltage to high voltage

Answer: Alternating current to Direct current


   
14). Pick out the scalar quantity
A). force
B). pressure
C). velocity
D). acceleration

Answer: pressure


   
15). If two bodies of different masses, initially at rest, are acted upon by the same force for the same time, then the both bodies acquire the same
A). velocity
B). momentum
C). acceleration
D). kinetic energy

Answer: momentum



16). Out of the following pairs, choose the pair in which the physical quantities do not have identical dimension?
A). Pressure and Young's modules
B). Planck's constant and Angular momentum
C). Impulse and moment of force
D). Force and rate of change of linear momentum

Answer: Impulse and moment of force


   
17). Let a thin capillary tube be replaced with another tube of insufficient length then, we find water
A). will overflow
B). will not rise
C). depressed
D). change its meniscus

Answer: will not rise


   
18). Metals are good conductors of electricity because
A). they contain free electrons
B). the atoms are lightly packed
C). they have high melting point
D). All of the above

Answer: they contain free electrons


   
19). Of the following properties of a wave, the one that is independent of the other is its
A). amplitude
B). velocity
C). wavelength
D). frequency

Answer: amplitude


   
20). Find the maximum velocity for the overturn of a car moving on a circular track of radius 100 m. The co-efficient of friction between the road and tyre is 0.2
A). 0.14 m/s
B). 140 m/s
C). 1.4 km/s
D). 14 m/s

Answer: 14 m/s

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