1
WB JEE 2017
MCQ (Single Correct Answer)
+1
-0.25
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WB JEE 2017 Physics - Current Electricity Question 23 English
Consider the circuit shown in the figure where all the resistances are of magnitude 1 k$$\Omega$$. If the current in the extreme right resistance X is 1 mA, the potential difference between A and B is
A
34 V
B
21 V
C
68 V
D
55 V
2
WB JEE 2017
MCQ (Single Correct Answer)
+1
-0.25
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The ratio of the diameter of the sun to the distance between the earth and the sun is approximately 0.009. The approximate diameter of the image of the sun formed by concave spherical mirror of radius of curvature 0.4 m is
A
4.5 $$ \times $$ 10$$-$$6 m
B
4.0 $$ \times $$ 10$$-$$6 m
C
3.6 $$ \times $$ 10$$-$$3 m
D
1.8 $$ \times $$ 10$$-$$3 m
3
WB JEE 2017
MCQ (Single Correct Answer)
+1
-0.25
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Two monochromatic coherent light beams A and B have intensities L and $${{L \over 4}}$$, respectively. If these beams are superposed, the maximum and minimum intensities will be
A
$${{{9L} \over 4},{L \over 4}}$$
B
$${{{5L} \over 4}}$$ , 0
C
$${{{5L} \over 2}}$$ , 0
D
2L, $${{L \over 2}}$$
4
WB JEE 2017
MCQ (Single Correct Answer)
+1
-0.25
Change Language
A point object is held above a thin equiconvex lens at its focus. The focal length is 0.1 m and the lens rests on a horizontal thin plane mirror. The final image will be formed at
A
infinite distance above the lens
B
0.1 m above the center of the lens
C
infinite distance below the lens
D
0.1 m below the center of the lens
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