Physics

Problem

The threshold frequencies of three metals X, Y and Z are

4 \times 10^{14}\,\text{AHz}

6 \times 10^{14}\,\text{AHz}

and

7 \times 10^{14}\,\text{AHz}

respectively. Two monochromatic radiations are available: P (

5 \times 10^{14}\,\text{AHz}

) and Q (

8 \times 10^{14}\,\text{AHz}

). a. (i) For each of the six possible metal–radiation pairs, state whether photoelectric emission occurs. b. (ii) Considering only the pairs that do emit, arrange them in decreasing order of stopping potential.

Browse the problem library