| 11th March 2013 05:37 PM | |
| Arvind Kumar | Re: WBJEE Papers Last 10 Years You want to get question paper of WBJEE so I have question paper which I am sharing with you: A train approaching a railway platform with a speed of 20 ms–1 starts blowing the whistle. Speed of sound in air is 340 ms–1. If the frequency of the emitted sound from the whistle is 640 Hz, the frequency of sound to a person standing on the platform will appear to be A. 600 Hz B. 640 Hz C. 680 Hz D. 720 Hz 2. A straight wire of length 2 m carries a current of 10A If this wire is placed in a uniform magnetic field of 0.15 T making an angle of 45° with the magnetic field, the applied force on the wire will be A. 1.5 N B. 3 N C. 3 2 N D.32N 5. Two elements A and B with atomic numbers ZA and ZB are used to produce characteristic x-rays with frequencies vA and vB respectively. If ZA : ZB = 1:2, then vA : vB will be A. 1 2 : B. 1 : 8 C. 4 : 1 D. 1 : 4 6. The de Broglie wavelength of an electron moving with a velocity C 2 (C = velocity of light in vacuum) is equal to the wavelength of a photon. The ratio of the kinetic energies of electron and photon is A. 1 : 4 B. 1 : 2 C. 1 : 1 D. 2 : 1 Complete question paper is available in attached file which is free for you. WBJEE Question Paper |
| 11th March 2013 10:30 AM | |
| Kaushik Masad | WBJEE Papers Last 10 Years For seeing paper pattern of WBJEE from where can I get its old question paper. |
