a) 10/63 b) 20/63 c) 40/63 d) 1/63 solution:b) 20/63
An electron, practically at rest, is initially accelerated through a potential difference of 100 volts . It then has a de Broglie wavelength = A. It then gets retarded through 19 volts and then has wavelength A. A further retardation through 32 volts changes the wavelength to . What is
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brings to you the BEST FACULTY for students of Class 9th - 12th. I (Balkishan Agrawal) aim at providing complete preparation for CBSE Board Exams (Maths) along with several other competitive examinations like NTSE, NSO, NSEJS, PRMO, etc. & Maths…