1
AIEEE 2005
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
An observer moves towards a stationary source of sound, with a velocity one-fifth of the velocity of sound. What is the percentage increase in the apparent frequency ?
A
$$0.5\% $$
B
zero
C
$$20\% $$
D
$$5\% $$
2
AIEEE 2005
MCQ (Single Correct Answer)
+4
-1
Two point charges $$+8q$$ and $$-2q$$ are located at $$x=0$$ and $$x=L$$ respectively. The location of a point on the $$x$$ axis at which the net electric field due to these two point charges is zero is
A
$${L \over 4}$$
B
$$2$$ $$L$$
C
$$4$$ $$L$$
D
$$8$$ $$L$$
3
AIEEE 2005
MCQ (Single Correct Answer)
+4
-1
A parallel plate capacitor is made by stacking $$n$$ equally spaced plates connected alternatively. If the capacitance between any two adjacent plates is $$'C'$$ then the resultant capacitance is
A
$$\left( {n + 1} \right)C$$
B
$$\left( {n - 1} \right)C$$
C
$$nC$$
D
$$C$$
4
AIEEE 2005
MCQ (Single Correct Answer)
+4
-1
Two thin wire rings each having a radius $$R$$ are placed at a distance $$d$$ apart with their axes coinciding. The charges on the two rings are $$+q$$ and $$-q.$$ The potential difference between the centres of the two rings is
A
$${q \over {2\pi \,{ \in _0}}}\left[ {{1 \over R} - {1 \over {\sqrt {{R^2} + {d^2}} }}} \right]$$
B
$${{qR} \over {4\pi \,{ \in _0}\,{d^2}}}$$
C
$${q \over {4\pi \,{ \in _0}}}\left[ {{1 \over R} - {1 \over {\sqrt {{R^2} + {d^2}} }}} \right]$$
D
zero
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