Physics Test Worksheets With Answer, 2013 Page 11
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2
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4
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8
9
10
11(b) 3.125%
(c) 0.3%
(d) 1%
Ans.(b)
96. A light wave of speed v is incidence on plane surface,afterreflection its speed will be
(a)v
(b)v/2
(c)v/3
(d)y/4
Ans.(a)
100. Two siren situated one kilometer apart are producing sound of frequency 330 Hz. An
observer starts moving from one siren to the other with a speed of 2 rn/s. If the speed of
sound be 330 rn/s, what will be the beat frequency heard by the observer?
(a)8
(b)4
(c)6
(d)1
Ans.(b)
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