M Dash Foundation: C Cube Learning

Category: basic physics

  • A Question a Day (series) Q2

    1. A ball is thrown with an initial velocity of 20 m/s at an angle of 30° above the horizontal. What is the instantaneous vertical velocity of the ball when it is 5.1 m above the release point? (g = 9.8 m/s^2) A. 0.2 m/s B. 6.6 m/s C. 10 m/s D. 17 m/s

  • Physics Class Test, XII {PU/ISc/ICSE/CBSE}

    A. What’s the speed of an electron in a cathode ray tube if the electric field and magnetic field are of unit strength in SI unit? Calculate magnetic force experienced by the electron. 4 marks B. Derive the formula for magnetic field produced by an infinitely long straight conductor. 4 marks

  • Physics Midterm for ISc-II (ICSE) [also good for CBSE/PU-II]

    (c) Fission of U – 235 nucleus releases 200 MeV of energy. Calculate the fission rate (i.e. no. of fissions per second) in order to produce a power of 320 MW. Q 10: (a) What’s the ratio of the shortest wavelength of Balmer series to the shortest wavelength of the Lyman series? (b) What are…

  • I.S.C. Board Question Paper. Physics, Class XII – 2009 ( C.I.S.C.E. )

    I.S.C. Board Question Paper. Physics, Class XII – 2009 ( C.I.S.C.E. )

    Question 1  Answer all question briefly and to the point. (i) Explain the statement ‘relative permittivity of water is 81’. (ii) Draw (at least three) electric lines of force due to an electric dipole. (iii) Find the value of resistance X in the circuit below so that the junction M and N are at the…

  • Physics midterm exam, for class XII (ISC-II) for C.I.S.C.E. board.

    Physics midterm exam, for class XII (ISC-II) for C.I.S.C.E. board.

    PART-I Total 10 marks Each question carries 1 mark.  Answer all. (10)               Question 1 [Objective, 10 X 1] (a) Which of the following drops faster? A. an electric dipole‘s electric field                      B. an electric dipole‘s electric potential C. a point charge’s electric field                            D. a point charge’s electric potential