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the energy gap in Germanium is 0.72 electron volt find the maximum wavelength of electromagnetic radiation which can cause transition from balance Mantu the conduction band

Sir, i am a 3rd year student of mechanical engineering and i have clear wbjee in the year 2018. So am i eligible for wbfs of 2020.

prove that The maximum number of nodes possible in a binary tree of height 'h' is 2^h-1

How unbalancing is avoided in railway traction?

In a linear circuit consisting of R=9 ohm & L=8 mH, a current I=5+100sin(100t+45°)+100sin(3000t+60°) amps is flowing. Find the equation of applied voltage. Kindly solve it as soon as you can. Thanks in advance.