In Geiger-Marsden Scattering experiment alpha per ticles of 5.5 MeV is allowed to fall on a thin gold foll of thickness `2.1 * 10^-7m.` Why gold foil is used in this experiment?

In Geiger-Marsden Scattering experiment alpha per ticles of 5.5 MeV is allowed to fall on a thin gold foll of thickness 2.1 * 10^-7m. In the above graph nearly 10^7 particles were detected when scattering angle is Zero. What do you under stand by it?

A long narrow slit is illuminated by blue light and the diffraction pattern is obtained on a white screen:-In a double slit experiment, the slits are separated by 0.03 cm and the screen is placed 1.5 m away. The distance between the central fringe and the fourth bright is 1 cm. Determine the wavelength of light used in the experiment.

Based on his alpha - ray scattering experiment, Rutherford proposed the nuclear model of an atom. The threshold frequency v0 for a metal is 6.2xx10^14s^(-1) . Calculate the K.E. emitted for an electron when the radiation of frequency v=8.7xx10^14s^(-1) strikes the metal.

The kinetic data for the given reaction A (g) + 2 B (g) overset(k)rarr C (g) is provided in the following table for three experiments at 300 K In another experiment starting with initial concentration of 0.5 and 1 M respectively for A and B at 300 K, find the rate of reaction after 50 minutes from start of experiment (in M/sec).