Answer Key Of WBJEE

Hello sir will you please get the West Bengal Joint Entrance Examinations Board Answer key of 2015 so that I can check it easily?

Don’t worry buddy I will help you here to get the answer key of 2015 issued by West Bengal Joint Entrance Examinations Board so that you can go through it easily.


Here is the answer key

An object is located 4 m from the first of two thin converging lenses of focal lengths 2 m and 1 m respectively. The lenses are separated by 3 m. The final image formed by the second lens is located from the source at a distance of
(A) 8.0 m (B) 7.5 m (C) 6.0 m (D) 6.5 m
Solution : (B)

A simple pendulum of length L swings in a vertical plane. The tension of the string when it makes an angle with the vertical and the bob of mass m moves with a speed v is (g is the gravitational acceleration)
(A) mv2 /L (B) mg cos + mv2/L (C) mg cos _ mv2/L (D) mg cos
Solution : (B)

A metal wire of circular cross-section has a resistance R1. The wire is now stretched without breaking so that its length is doubled and the density is assumed to remain the same. If the resistance of the wire now becomes R2 then R2 : R1 is
(A) 1 : 1 (B) 1 : 2 (C) 4 : 1 (D) 1 : 4
Solution : (C)

Assume that each diode shown in the figure has a forward bias resistance of 50 and an infinite reverse bias
resistance. The current through the resistance 150 is
(A) 0.66 A (B) 0.05 A (C) Zero (D) 0.04 A
Solution : (D)


Answer Key Of WBJEE







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Address:-
West Bengal Joint Entrance Examinations Board
Examinations Board AQ-13/1, Sector-V, Salt Lake City, Kolkata-700 091.

Phone:-
1800 345 0050

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