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KEAM 2017 Physics and Chemistry Paper
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© examsnet.com
Question : 61
Total: 120
Wavelength of the wave with 30 MHz frequency is
1 cm
10 cm
100 cm
1000 cm
10000 cm
Validate
Solution:
Given,
frequency
v
=
30
M
H
z
=
30
×
10
6
H
z
We know that,
c
=
v
λ
λ
=
c
v
c
=
3
×
10
8
m
/
s
λ
=
3
×
10
8
30
×
10
6
=
10
m
=
1000
c
m
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