Trough to crest distance
1.5=(2n1+1)2λ ......(1)
Trough to trough distance
5=(n2λ) .....(2)
from (1) and (2)
51.5=2(n2)2n1+1
3n2=10n1+5
n1 and n2 are integer
(1) n1=1,n2=5,λ=1
(2) n1=4,n2=15,λ=1/3
(3) n1=7,n2=25,λ=1/5
For a transvers wave travelling, along a straight line, the distance between two peaks (crests) is 5 m, while the distance between one crest and one…
JEE Main 2020 — Physics Waves & Oscillations
2020mcqmedium
For a transvers wave travelling, along a straight line, the distance between two peaks (crests) is 5 m, while the distance between one crest and one trough is 1.5 m. The possible wavelengths (in m) of the waves are:
Official previous-year question
Held on 4 Sept 2020 · Verified 6 Jul 2026.
Options
- A
1,3,5
- B
11,31,51,.....
- C
1,2,3,....
- D
21,41,61,.....
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