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Re: WBJEE Physics Paper
As you want I am here giving you sample paper of Physics subject for West Bengal Joint Entrance Examinations (WBJEE). WBJEE Physics Subject Paper: 1. Two coils of self inductances 6mH and 8mH are connected in series and are adjusted for highest coefficient of coupling. Equivalent self inductance L for the assembly is approximately (A) 50 mH (B) 36 mH (C) 28 mH (D) 18 mH Ans : (C) 3. Two equal resistances, 400 each, are connected in series with a 8 V battery. If the resistance of first one increases by 0.5%, the change required in the resistance of the second one in order to keep the potential difference across it unaltered is to (A) increase it by 1 (B) increase it by 2 (C) increase it by 4 (D) decrease it by 4 Ans : (B) 4. Angle between an equipotential surface and electric lines of force is (A) 0° (B) 90° (C) 180° (D) 270° Ans : (B) The potential difference V required for accelerating an electron to have the de Broglie wavelength of 1Å is (A) 100 V (B) 125 V (C) 150 V (D) 200 V Ans : (C) The work function of Cesium is 2.27 eV. The cutoff voltage which stops the emission of electrons from a cesium cathode irradiated with light of 600 nm wavelength is (A) 0.5 V (B) – 0.2V (C) – 0.5V (D) 0.2 V Ans : (None of the given options correct) So no emission will take place. 10. The number of DeBroglie wavelengths contained in the second Bohr orbit of Hydrogen atom is (A) 1 (B) 2 (C) 3 (D) 4 Ans : (B) 11. The wavelength of second Balmer line in Hydrogen spectrum is 600 nm. The wavelength for its third line in Lyman series is (A) 800 nm (B) 600 nm (C) 400 nm (D) 200 nm Ans : (None of the given options correct) Here is the Attachment. |
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