a
75cm
b
150cm
c
37.5cm
d
112cm
e
50cm
Explanation
Correct Option
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Discussions (10)

John Frederick
10 years ago
Here is an explanation:
If L=X/2
Where X Is Wavelength
then,X=2L
Where L=75cm
X=2*75=150cm.

quitereal
10 years ago
I think the answer is 150.
we were asked to find the wavelength.
wavelength=2L
= 75×2
=150




