The momentum of an electron revolving in nth orbit is given by: (Symbols have their usual meanings)
\(\frac{nh}{2πr}\)
\(\frac{nh}{2r}\)
\(\frac{nh}{2\pi}\)
\(\frac{2πr}{nh}\)
The Correct Option is A
Solution and Explanation
Angular momentum is an integral multiple of \(\frac{h}{2\pi}\)
mvr=\(\frac{nh}{2\pi}\)
So momentum mv=\(\frac{nh}{2\pi r}\)
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Concepts Used:
Momentum
It can be defined as "mass in motion." All objects have mass; so if an object is moving, then it is called as momentum.
the momentum of an object is the product of mass of the object and the velocity of the object.
Momentum = mass • velocity
The above equation can be rewritten as
p = m • v
where m is the mass and v is the velocity.
Momentum is a vector quantity and the direction of the of the vector is the same as the direction that an object.