✓ 1 MARKS
MCQ
🔥 APPEARED IN 3 BOARD SETS
If $(3\hat{i} - 2\hat{j} + 5\hat{k}) \times (4\hat{i} + p\hat{j} + q\hat{k}) = \vec{0}$, then the values of $p$ and $q$ are :
A
$p = -\frac{2}{3}, q = \frac{5}{3}$
B
$p = -\frac{8}{3}, q = \frac{20}{3}$
C
$p = \frac{20}{3}, q = -\frac{8}{3}$
D
$p = 0, q = 0$
01 // VERIFIED BOARD OCCURRENCES
| Year | Paper Code | Set | Position |
|---|---|---|---|
| CBSE 2026 | Series 65-4 | Set 1 | Question 16 |
| CBSE 2026 | Series 65-4 | Set 2 | Question 13 |
| CBSE 2026 | Series 65-4 | Set 3 | Question 15 |
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)