1
WB JEE 2018
MCQ (Single Correct Answer)
+1
-0.25
Change Language
Four resistors, 100$$\Omega $$, 200$$\Omega $$, 300$$\Omega $$ and 400$$\Omega $$ are connected to form four sides of a square. The resistors can be connected in any order. What is the maximum possible equivalent resistance across the diagonal of the square?
A
210$$\Omega $$
B
240$$\Omega $$
C
300$$\Omega $$
D
250$$\Omega $$
2
WB JEE 2018
MCQ (Single Correct Answer)
+1
-0.25
Change Language
What will be current through the 200$$\Omega $$ resistor in the given circuit, a long time after the switch K is made on?

WB JEE 2018 Physics - Current Electricity Question 22 English
A
Zero
B
100 mA
C
10 mA
D
1 mA
3
WB JEE 2018
MCQ (Single Correct Answer)
+1
-0.25
Change Language
A point source is placed at coordinates (0, 1) in xy-plane. A ray of light from the source is reflected on a plane mirror placed along the X-axis and perpendicular to the xy-plane. The reflected ray passes through the point (3, 3). What is the path length of the ray from (0, 1) to (3, 3)?
A
5
B
$$\sqrt {13} $$
C
2$$\sqrt {3} $$
D
1 + 2$$\sqrt {3} $$
4
WB JEE 2018
MCQ (Single Correct Answer)
+1
-0.25
Change Language
WB JEE 2018 Physics - Geometrical Optics Question 8 English
Two identical equiconvex lenses, each of focal length f are placed side by side in contact with each other with a layer of water in between them as shown in the figure. If refractive index of the material of the lenses is greater than that of water, how the combined focal length F is related to f?
A
F > f
B
$${f \over 2} < F < f$$
C
$$F < {f \over 2}$$
D
F = f
EXAM MAP
Medical
NEET
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
CBSE
Class 12