The Alpha Particle Scattering Experiment. They took a thin gold foil having a thickness of 2.1×10-7 m and placed it in the centre of a rotatable detector made of zinc sulfide and a microscope. Then, they directed a beam of 5.5MeV alpha particles emitted from a radioactive source at the foil.

The charge on a proton is +1.6 × 10 −19 C and that on an electron is −1.6 × 10 −19 C. Does it mean that the electron has 3.2 × 10 −19 C less charge than the proton?

An alpha particle (q = +2e, m = 4.00 u) travels in a circular path of radius 5.52 cm in a uniform magnetic field with B = 1.07 T. Calculate (a) its speed, (b) its period of revolution, (c) its kinetic energy, and (d) the potential difference through which it would have to …

An alpha particle (consisting of two protons and two neutrons) is moving in a circle at constant speed, perpendicular to a uniform magnetic field applied by some current-carrying coils. The alpha particle makes one clockwise revolution every 84 nanoseconds (see the figure). O If the speed is small compared to the speed of light, what is the ...

The kinetic energy of the emitted α particle is found to be 4.44 M e V. 222 86 R n nucleus then goes to its ground state by γ-decay. The energy of the emitted γ photon is k e V. [Given : atomic mass of 226 88 R a = 226.005 u, atomic mass of 222 86 R n = 222.000 u, atomic mass of α particle = 4.000 u, 1 u = 931 M e V / c 2, c is speed of light]

A proton and an α - particle (Helium nucleus) enters a uniform magnetic field with their direction of velocity perpendicular to the direction of magnetic field. (i i) If proton and α - particle enter the magnetic field, perpendicular to it with same velocity, then the ratio of the radii of curvature of proton and α - particle will be [1 Mark]

An alpha particle (mass, m=6.64×10-27 kg) starts at location A and travels through a charged ring, reaching location C. Its velocity at point A is v→A=〈-2.80×105,0,0〉 m/s. At point C, it is at rest. The electric potential energy of the particle-ring system at point A is UA=-7.07×10-16 J and at point B is UB=-1.008×10-15 J. Part 1

An electron, a proton, a deuteron and an α − particle are accelerated by the same potential V. If λ e, λ p, λ d and λ α represents the de-Broglie wavelengths of electron, proton, deuteron and α − particle respectively. Which of the following statement(s) is/are correct.

a very large fraction of alpha-particles were deflected by 180 o, indicating that all the positive charges and mass of the gold atom were concentrated in a very small volume within the atom. A many particles were deflected from their path, indicating that the positive charge of the atom occupies very large space.

A proton , a deuteron, and an alpha particle, accelerated through the same potential difference, enter a region of uniform magnetic field , moving at right angles to mag. field B. (a) Find their kinetic energies. If the radius of proton's circular path is r p, what are the radii of (b) the deuteron and (c) the alpha particle path in term of r p