Question

(a) In Rutherford experiment, generally the thin foil of heavy atoms like gold, platinum etc. have been used to be bombarded by the α-particles. If a thin foil of light atoms like aluminium etc. is used, what difference would be observed from the above results? (b) Arrange the following type of radiations in increasing order of wavelength: (a) Radiation from microwave oven (b) Amber light from traffic signal (c) Radiation from FM radio (d) Cosmic rays from outer space and (e) X-rays

If Yellow light emitted from a sodium lamp has a wavelength of 580 nm. Then Calculate the frequency and wave number of yellow light.