Physics Test Worksheets With Answer, 2013 Page 5
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1135. The ozone layer is important because
(a) it prevents the cooling of each at night
(b) it prevents the IR rays coming from the space
(c) it prevents UV rays from the meteors coming from the space
(d) it prevents the UV rays and micro rays the coming from the space
Ans.(d)
36. The number of zones for achieving the first minima on the screen due to circular gate
will be
(a)4
(b)6
(c)3
(d)2
Ans.(d)
37. In India for the use the fixed value of voltage and frequency of electricity are
(a) 200 V, 60 Hz
(b) 220 V. 50Hz
(C) 220 V, 60 Hz
(d)220V, 50Hz
Ans.(b)
38. If resonant frequency is / and capacity become 4 times, then resonant frequency will be
(a)f/2
(b)2f
(c)f
(d)f/4
Ans.(a)
39. The forbidden energy gap in the intrinsic semiconductor is
(a)0.leV
(b)leV
(c) 5 eV
(d) 10 eV
Ans.(b)
40. How much kinetic energy will be gained by an a - particle in going from a point at 70 V
to another point at 50 V?
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