M Dash Foundation: C Cube Learning

Tag: physics questions

  • A Question a Day (series) Q3

    The equation v = a*del_t is sometimes used to find velocity when acceleration and time are known. Another form of this equation is v = v_0 + a*del_t. In this second form of the equation, the function of the term v_0 is to: A. indicate that the equation is valid only for an object that…

  • 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 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…

  • Physics class tests, XII/ICSE/CBSE

    3. Why Ka and Kb lines are produced (chose only one appropriate answer) A. electronic transitions B. Atomic collisions C. Radioactive decay D. Nuclear transmutation 4. Exactly why there is quantization of physical variables such as momentum, angular momentum, energy, orbital distance and speed? A. wave-particle duality B. Interference of waves C. Particle acceleration to…

  • Physics class tests for XII/ICSE/CBSE

    Question 1 Derive potential due to an electric dipole in a general direction making an angle J with dipole axis. Use E = -dV/dr to obtain E in general direction. Question 2 Derive electric field in the end-on and broad-on position for a dipole vector P = p 2Q.a, where P is the vector and…