GENERAL SCIENCE PHYSICS ONE LINERS FOR TNPSC UPSC SSC SET 063

GENERAL SCIENCE PHYSICS ONE LINERS FOR TNPSC UPSC SSC SET 063

621). For a transversely vibrating string the frequency of vibration is directly proportional to
A). its length
B). its linear density
C). the load
D). none of these

Answer: the load


   
622). The exclusion principle was proposed by
A). Pascal
B). Pauli
C). Planck
D). Einstein

Answer: Pauli


   
623). The momentum of a body of mass m moving with constant velocity v is
A). mv^2
B). m^2v
C). mv
D). m/v

Answer: mv


   
624). The period of oscillation of a simple pendulum
A). decreases with length
B). is independent of length
C). increases with length
D). increases with amplitude

Answer: increases with length


   
625). The weight of the body at the centre of the earth is
A). zero
B). infinite
C). slightly less than at the poles
D). slightly less than at the equator

Answer: zero



626). By the use of cold water, how will you separate two tumblers stuck together into each other?
A). pouring cold water in the outer tumbler
B). pouring cold water in the inner tumbler
C). by putting both the tumblers in the cold water
D). We cannot separate them by using cold water

Answer: We cannot separate them by using cold water


   
627). A rainbow is caused by
A). interference
B). diffraction
C). total internal reflection
D). dispersion

Answer: dispersion


   
628). Water drops are spherical because of its
A). surface tension
B). viscosity
C). density is one
D). polarity

Answer: surface tension


   
629). Loudness of sound produced by a vibrating string is directly proportional to
A). the amplitude
B). square of the amplitude
C). the frequency
D). vibrating length

Answer: square of the amplitude


   
630). The co-efficient of reflectivity of a perfect black body is
A). zero
B). infinite
C). one
D). between zero and one

Answer: zero