Find WBJEE 2014 Solved Physics Question Paper – Part 6 in this article. This paper consists of 5 questions (#26 to #30) from WBJEE 2014 Physics paper. Detailed solution of these questions has been provided so that students can match their solutions.
Importance of Previous Years’ Paper:
Previous years’ question papers help aspirants in understanding exam pattern, question format, important topics and assessing preparation. It has also been seen that sometimes questions are repeated in WBJEE Exam. So, this paper will certainly boost your confidence.
About WBJEE Exam
WBJEE is a common entrance examinations held at state level for admission to the undergraduate level engineering and medical courses in the state of West Bengal. The Physics section of WBJEE 2014 engineering entrance exam consists of 40 questions.
26. A parallel plate capacitor is charged an then disconnected from the charging battery. If the plates are now moved farther apart by pulling at them by means of insulating handles, then
(A) the energy stored in the capacitor decreases
(B) the capacitance of the capacitor increases
(C) the charge on the capacitor decreases
(D) the voltage across the capacitor increases
Ans : (D)
So, the voltage increases as the plates are now moved farther apart by pulling at them by means of insulating handles.
27. When a particle executing SHM oscillates with a frequency ν, then the kinetic energy of the particle
(A) changes periodically with a frequency of ν
(B) changes periodically with a frequency of 2ν
(C) changes periodically with a frequency of ν/2
(D) remains constant
Ans : (B)
When a particle executing SHM oscillates with a frequency ν, then the kinetic energy of the particle changes periodically with a frequency of 2ν.
28. The ionization energy of hydrogen is 13.6eV. The energy of the photon released when an electron jumps from the first excited state (n = 2) to the ground state of a hydrogen atom is
(A) 3.4 eV
(B) 4.53 eV
(C) 10.2 eV
(D) 13.6 eV
Ans : (C)
Ans : (C)
30. A scientist proposes a new temperature scale in which the ice point is 25 X (X is the new unit of temperature) and the steam point is 305 X. The specific heat capacity of water in this new scale is
(in Jkg–1 X–1)
Ans : (D)