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45. The principle of controlled chain reaction is
used in ............
Ans : Atomic energy reactor (VST-03)
46. Three plates of common surface area A
are connected as shown in fig. The effective capacitance will be
Ans :  (VST-09)
47. A resistor of resistance 'R' is connected to
25V supply and heat produced in it is 25
joule/sec. Then value of R is ........
Ans :  (WATJEEP-12)
48. A monochromatic light is passed through a
prism, which colour of light will shows minimum deviation?
Ans : Red (TAIEEE-06)
49. In the given figure, the electron enters into
the magnetic field, then in which direction it deflects?
Ans : Towards
_ve y-axis. (TIIT-03)
50. What will be the height of the image when
an object of 1 mm is placed on the axis of a
convex mirror of radius of curvature 40 cm ?
Ans : 5 mm (TPMT/PDT-03)
51. Weight of a man when standing on a lift is 60
kg . What is his weight when he is standing on
lift which is moving with acceleration  ?
Ans : 30 kg (DT-23)
52. In a transistor configuration  parameter is ..........
Ans :  (DT-29)
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53. In a progressive wave, the distance between
two consecutive crests is .......
Ans :  (PMT/PDT-08)
54. A solid sphere is given a kinetic energy 'E'.
What is the fraction of KE associated with rotation ?
Ans : 2/7 (TAIEEE-09)
55. In Young's double slit experiment, the
maximum intensity is . When one of the slit is closed
the intensity becomes ..........
Ans :  (VST-03)
56. A current carrying coil is placed with its
axis parallel to N- S direction. Let horizontal component of earth magnetic field be  and magnetic field inside the loop is H. If a
magnetic is suspended inside the loop, it makes an
angle  with H. What is value of  ?
Ans :  (WATJEE-12)
57. Water tank is placed at height h. But water
doesn't flow into a house of height h due to ........
Ans : Water flows with velocity (VST-03)
58. ECE of Cu and Ag are  and  . A certain current deposits 14 gm. of Cu. Water
will be the amount of Ag deposited ?
Ans : 2.4 gm (VST-08)
59. A rod of length 20 cm is rotating with
angular speed of 100 rps in a magnetic field of
strength 0.5T. What is the potential difference
between the two ends of rod ?
Ans : 6.28 V (TIIT-P-03)
60. A sine wave is represented by Q. The
distance between the two particles having same maximum speed is ........
Ans :  VST-02
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