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12th April 2016, 04:08 PM
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Join Date: May 2012
Re: WBJEE Past Papers

Hey buddy the WBJEE is the entrance examination for admission to engineering and medical colleges in West Bengal.

The engineering aspirants appear for the Physics, Chemistry and Maths paper while the Medical aspirants appear for Physics, Chemistry and Biology paper.

Physics, Chemistry paper.

1. 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

source

4m 3m

Solution : (B)

2. 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)

3. The length of a metal wire is L1 when the tension is T1 and L2 when the tension is T2. The unstretched length

of the wire is

(A)

Solution : (C)

4. A hollow sphere of external radius R and thickness t (<< R) is made of a metal of density . The sphere will

float in water if

(A)

Solution : (B)

L L 1 2

2 (B) L L1 2 (C) 2 1 1 2

R t (B)


Attached Files
File Type: pdf WBJEE paper.pdf (927.9 KB, 102 views)


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