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AB is a smooth surface and BC is rough horizontal surface. A block of mass 1 kg is released from rest on AB at a height 3 m above ground. The collision between blocks is elastic. The coefficient of friction between 2 kg block and surface is \(\frac{1}{3}\). The distance travelled by 2 kg block before coming to rest is
(a) 3 m
(b) 5 m
(c) 6 m
(d) 4 m
Updated Wed, 11 Dec 2019 04:22 pm


The K,L and M energy levels of platinum lie roughly at 78,12 and 3keV respectively. The ratio of wavelength of K-alpha line to that of K-beta line in X-ray spectrum is?
Updated Mon, 02 Dec 2019 04:56 pm