✓ 1 MARKS
MCQ
🔥 APPEARED IN 3 BOARD SETS
The path difference between the two waves meeting at point P, where there is a minimum in the interference pattern is :
A
$8\cdot1 \times 10^{-7}\text{ m}$
B
$7\cdot2 \times 10^{-7}\text{ m}$
C
$6\cdot5 \times 10^{-7}\text{ m}$
D
$6\cdot0 \times 10^{-7}\text{ m}$
01 // VERIFIED BOARD OCCURRENCES
| Year | Paper Code | Set | Position |
|---|---|---|---|
| CBSE 2026 | Series 55-5 | Set 1 | Question (iii) |
| CBSE 2026 | Series 55-5 | Set 2 | Question (iii) |
| CBSE 2026 | Series 55-5 | Set 3 | Question iii |
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)