GENERAL SCIENCE PHYSICS ONE LINERS FOR TNPSC UPSC SSC SET 145

GENERAL SCIENCE PHYSICS ONE LINERS FOR TNPSC UPSC SSC SET 145

1441). To hear a distant echo, the surface reflecting the sound should atleast be at a distance (Take velocity of sound in air = 340 m/s)
A). 34 m
B). 17 m
C). 51 m
D). 10 m

Answer: 17 m


    
1442). Identify the process(es) from the following which involves absorption of heat:
l) Condensation        II) Sublimation           III) Evaporation
A). l and II only
B). l and III only
C). II and Ill only
D). I only

Answer: II and Ill only


    
1443). 1 KM(A), 1 Light year (B) and 1 Astronomical unit (C) are related as
A). A = B = C
B). A < B < C
C). A < B > C
D). A > B > C

Answer: A < B > C


    
1444). Mass of an object is 10 kilogram. Its weight on the earth and is space respectively are 5N,10N
A). 5N, 10N
B). 10N, 10N
C). 10 N, zero N
D). 98 N, zero N

Answer:  98 N, zero N

 

1445). What is the non conservative force in the following forces?
A). Frictional force
B). Spring force
C). Gravitational force
D). Force due to Earth's gravity

Answer: Frictional force



1446). Certain metals and compounds carry high electric current and have zero resistance at very low temperatures. The materials possessing this property are known as
A). Resistors
B). Capacitors
C). Dielectrics
D). Super conductors

Answer: Super conductors


    
1447). The property of rotating the plane of vibration of polarised light by certain crystals is called
A). Polarisation
B). Diffraction
C). Optical activity
D). Interference

Answer: Optical activity


    
1448). Match the following List - I with List - I! and choose the correct answer from the codes given below:
List - l                                           List - II
a) Temperature                     1) Kilogram
b) Luminous intensity            2) Ampere
c) Electric current                  3) Candela
d) Mass                                4) Kelvin

a b c d
A). 3 4 1 2
B). 1 2 4 3
C). 4 3 2 1
D). 2 1 4 3

Answer: 4 3 2 1


    
1449). Faraday's laws of electrolysis are related to
A). Atomic number of the cation
B). Atomic number of the anion
C). Equivalent weight of the electrolyte
D). Speed of the cation

Answer: Equivalent weight of the electrolyte


    
1450). Identify the incorrect pair:
I) Length - Scalar
II) Velocity - Vector
III) Weight - Scalar
IV) Momentum - Vector
A). I
B). II
C). III
D). IV

Answer: III