✓ 3 MARKS
Short Answer
🔥 APPEARED IN 3 BOARD SETS
Find the ratio of the de Broglie wavelengths associated with an alpha particle and a proton, if both
(a) have the same speeds,
(b) have the same kinetic energy,
(c) are accelerated through the same potential difference.
01 // VERIFIED BOARD OCCURRENCES
| Year | Paper Code | Set | Position |
|---|---|---|---|
| CBSE 2022 | Series 55-2 | Set 1 | Question 10 |
| CBSE 2022 | Series 55-2 | Set 2 | Question 5 |
| CBSE 2022 | Series 55-2 | Set 3 | Question 10 |
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)