Jagran Josh Logo
  1. Home
  2. |  
  3. Engineering Exams|  

WBJEE 2014 Solved Physics Question Paper – Part 1

May 3, 2017 18:17 IST

    Find WBJEE 2014 Solved Physics Question Paper – Part 1 in this article. This paper consists of 5 questions (#1 to #5) 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 Mathematics section of WBJEE 2014 engineering entrance exam consists of 80 questions.

    Q1. A whistle whose air column is open at both ends has a fundamental frequency of 5100 Hz. If the speed of sound in air is 340 ms–1, the length of the whistle, in cm, is

    (A) 5/3

    (B) 10/3

    (C) 5

    (D) 20/3

    Ans: (B)

    Sol:

    According to the wave equation,

    Speed = Frequency . Wavelength

    The relationship, which works only for the first harmonic of an open-end air column, is

    wavelength = 2L

    WBJEE 2014

    Q2. One mole of an ideal monoatomic gas is heated at a constant pressure from 0°C to 100°C. Then the change in the internal energy of the gas is (Given R = 8.32 Jmol–1K–1)  

    (A) 0.83 × 103 J

    (B) 4.6 × 103 J

    (C) 2.08 × 103 J

    (D) 1.25 × 103 J

    Ans: (D)

    Sol:

    WBJEE 2014

    WBJEE 2014

    Q4. In which of the following pairs, the two physical quantities have different dimensions?

    (A) Planck’s constant and angular momentum

    (B) Impulse and linear momentum

    (C) Moment of inertia and moment of a force

    (D) Energy and torque

    Ans: (C)

    Sol.

    Moment of inertia and moment of a force are the two physical quantities which have different dimensions.

    Q5. A small metal sphere of radius a is falling with a velocity ν through a vertical column of a viscous liquid. If the coefficient of viscosity of the liquid is η, then the sphere encounters an opposing force of

    WBJEE 2014

    Ans: (C)

    Sol:

    According to Stoke’s law the frictional drag due to viscous force is given as,

    Frictional force (F) = 6πηav

    Also Get:

    WBJEE Sample Papers

    WBJEE Previous Years' Question Papers

    WBJEE Online Test

    DISCLAIMER: JPL and its affiliates shall have no liability for any views, thoughts and comments expressed on this article.

    Latest Videos

    Register to get FREE updates

      All Fields Mandatory
    • (Ex:9123456789)
    • Please Select Your Interest
    • Please specify

    • ajax-loader
    • A verifcation code has been sent to
      your mobile number

      Please enter the verification code below

    Newsletter Signup
    Follow us on
    This website uses cookie or similar technologies, to enhance your browsing experience and provide personalised recommendations. By continuing to use our website, you agree to our Privacy Policy and Cookie Policy. OK
    X

    Register to view Complete PDF