✓ 3 MARKS
Numericals
🔥 APPEARED IN 3 BOARD SETS
Photoemission of electrons occurs from a metal ($\phi_0 = 1\cdot96\text{ eV}$) when light of frequency $6\cdot4 \times 10^{14}\text{ Hz}$ is incident on it. Calculate :
(a) Energy of a photon in the incident light,
(b) The maximum kinetic energy of the emitted electrons, and
(c) The stopping potential.
01 // VERIFIED BOARD OCCURRENCES
| Year | Paper Code | Set | Position |
|---|---|---|---|
| CBSE 2026 | Series 55-5 | Set 1 | Question 27 |
| CBSE 2026 | Series 55-5 | Set 2 | Question 25 |
| CBSE 2026 | Series 55-5 | Set 3 | Question 26 |
02 // OFFICIAL CBSE MARKING SCHEME BREAKDOWN
- Step 1: Stating the fundamental formula / law statement (+1 Mark)
- Step 2: Intermediate mathematical substitution or proof steps (+1 Mark)
- Step 3: Correct final value or conclusion with mandatory SI units (+1 Mark)