✓ 1 MARKS
MCQ
🔥 APPEARED IN 3 BOARD SETS
Four independent waves are expressed as
(i) $y_1 = A_1 \sin \omega t$
(ii) $y_2 = A_2 \sin 2\omega t$
(iii) $y_3 = A_3 \cos \omega t$
(iv) $y_4 = A_4 \sin (\omega t + \pi/3)$
The interference between two of these waves is possible in
A
(i) and (iii) only
B
(iii) and (iv) only
C
(i), (iii) and (iv) only
D
All of them
01 // VERIFIED BOARD OCCURRENCES
| Year | Paper Code | Set | Position |
|---|---|---|---|
| CBSE 2026 | Series 55-1 | Set 1 | Question 10 |
| CBSE 2026 | Series 55-1 | Set 2 | Question 4 |
| CBSE 2026 | Series 55-1 | Set 3 | Question 1 |
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)