1
NEET 2013
MCQ (Single Correct Answer)
+4
-1
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For a normal eye, the cornea of eye provides a converging power of 40 D and the least converging power of the eye lens behinf the cornea is 20 D. Using this information, the distance between the retina and the cornea-eye lens can be estimated to be
A
1.67 cm
B
1.5 cm
C
5 cm
D
2.5 cm
2
NEET 2013
MCQ (Single Correct Answer)
+4
-1
Change Language
Two pith balls carrying equal charges are suspended from a common point by strings of equal length, the equilibrium separation between them is r. Now the strings are rigidly clamped at half the height. The equilibrium separation between the balls now become

NEET 2013 Physics - Electrostatics Question 62 English
A
$$\left( {{{2r} \over {\sqrt 3 }}} \right)$$
B
$$\left( {{{2r} \over 3}} \right)$$
C
$${\left( {{1 \over {\sqrt 2 }}} \right)^2}$$
D
$$\left( {{r \over {\root 3 \of 2 }}} \right)$$
3
NEET 2013
MCQ (Single Correct Answer)
+4
-1
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The resistances of the four arms P, Q, R and S in a Wheatstone's bridge are 10 ohm, 30 ohm, 30 ohm and 90 ohm, respectively. The e.m.f. and internal resistance of the cell are 7 volt and 5 ohm respectively. If the galvanometer resistance is 50 ohm, the current drawn from the celll will be
A
0.1 A
B
2.0 A
C
1.0 A
D
0.2 A
4
NEET 2013
MCQ (Single Correct Answer)
+4
-1
Change Language
The internal resistance of a 2.1 V cell which gives a current of 0.2 A through a resistance of 10 $$\Omega $$ is
A
0.8 $$\Omega $$
B
1.0 $$\Omega $$
C
0.2 $$\Omega $$
D
0.5 $$\Omega $$
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