✓ 1 MARKS
MCQ
🔥 APPEARED IN 3 BOARD SETS
The kinetic energy of a charged particle is increased to four times of its initial value. The de Broglie wavelength associated with the particle will :
A
increase by 100% of its initial value.
B
increase by 50% of its initial value.
C
decrease by 25% of its initial value.
D
decrease by 50% of its initial value.
01 // VERIFIED BOARD OCCURRENCES
| Year | Paper Code | Set | Position |
|---|---|---|---|
| CBSE 2026 | Series 55-4 | Set 1 | Question 10 |
| CBSE 2026 | Series 55-4 | Set 2 | Question 6 |
| CBSE 2026 | Series 55-4 | 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)