M Dash Foundation: C Cube Learning

Category: Thoughts on Science

  • 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…

  • Homework questions of Physics for Junior college (PUC, ISc, XII, CBSE, ICSE)

    Question 3 Deuteron is a bound state of a neutron (n) and a proton (p) with a binding energy BE = 2.2 MeV. A g-ray of energy E is aimed at a deuteron nucleus to try to break it into a neutron and proton so that n and p move in direction of incident g…

  • Class XII, ICSE exam questions, Physics, Updated Version 2

    Question 6 [2+3+2] Obtain an expression for the Nuclear Size of an atom by solving for distance of closest approach (r) which is also known as Impact Parameter (say l). Use an incoming alpha-particle of mass mα and charge q that’s deflected by the presence of a nucleus of atomic number Z to obtain l.…

  • Class XII, CBSE exam questions, Physics

    Electrostatics 6. State how density of electric lines of force is related to the Electric Field Vector intensity E. Also mention another three properties of the lines of forces. 7. Write the vector expression for Coulomb’s law and state 3 forces that are conservative forces by nature. 8. What happens to the charge on a…

  • Can Neutrinos produce sound? Scream like Fox?

    Response: Neutrinos vibrate, YES. Much like anything else, since they have energy. But they do not vibrate at any particular frequency since their energy is not fixed. Their energy can vary widely and that makes them vibrate at different frequencies. Its worthwhile to mention that its not this frequency or oscillation which we were originally…