The work function (energy needed to remove an electron) of gold is 5.1 ev. two pieces of gold (at the same potential) are separated by a distance l. for what value of l will the transmission probability for an electron to cross from one to the other be t ≈ 10-3? assume that g = 1 in the formula for the tunneling probability.

The value of L is 0.3 nm.

Explanation:

Given that,

Energy

Transmission probability = 10⁻³

We need to calculate the value of L

We know that,

Formula of tunneling probability

....(I)

Where,

....(II)

Where, m = mass of electron

Put the value in equation (II)

From equation (I)

Hence, The value of L is 0.3 nm.

the motion of a pendulum is a classic example of mechanical energy conservation. a pendulum consists of a mass (known as a bob ) attached by a string to a pivot point. as the pendulum moves it sweeps out a circular arc, moving back and forth in a periodic fashion.

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