✓ 1 MARKS
MCQ
🔥 APPEARED IN 3 BOARD SETS
The energy of an electron in an orbit in hydrogen atom is $- 3\cdot 4\text{ eV}$. Its angular momentum in the orbit will be :
A
$\frac{3h}{2\pi}$
B
$\frac{2h}{\pi}$
C
$\frac{h}{\pi}$
D
$\frac{h}{2\pi}$
01 // VERIFIED BOARD OCCURRENCES
| Year | Paper Code | Set | Position |
|---|---|---|---|
| CBSE 2026 | Series 55-5 | Set 1 | Question 10 |
| CBSE 2026 | Series 55-5 | Set 2 | Question 1 |
| CBSE 2026 | Series 55-5 | Set 3 | Question 7 |
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)