Concepts Of Physics MCQ Edition [Volume 2]PhysicsPhotoelectric Effect and Wave–Particle Duality

Suppose p and E represent the linear momentum and energy of a photon, respectively. If the wavelength is reduced,

Options

Aboth p and E decrease
Bp increases and E decreases
Cboth p and E increase
Dp decreases and E increases

Correct answer

C. both p and E increase

Step-by-step solution

The energy of a photon is given by E = hc . The linear momentum of a photon is given by p = h . Since both energy E and momentum p are inversely proportional to the wavelength , a decrease in wavelength will result in an increase in both p and E .

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