(d) of appearance of friction in the coils
Ans: (c)
49.If the length of a simple pendulum is increased by 4% then its time period
will be : [RRB ASM/CC 2004]
(a) increased by 3%
(b) increased by 2%
(c) increased by 4%
(d) one of these
Ans: (b)
50.The ratio of the transverse deformation and the longitudinal deformation is
called: [RRB Assist. driver 2003]
(a) Poisson ratio
(b) Bulk modulus of elasticity
(c) Rigidity modulus of elasticity
(d) Young"s modulus of elasticity
Ans: (a)
51.The raindrops are spherical due to : [RRB CC 2003, UPPCS (Pre) 2005]
(a) surface tension
(b) atmospheric friction of air molecules
(c) gravity of the spherical earth
(d) viscosity of the raindrops
Ans: (a)
52.If a ship moves from fresh water into seawater, it will- [CDS,2011]
(a) sink completely
(b) sink a little bit
(c) rise a little higher
(d) remain unaffected
Ans: (c)
53.The unit of viscosity is : [RRB ASM 2003]
(a) poise
(b) pascal
(c) poiseuille
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