The wavelength of signals from a radio transmitter is 1500mm and the frequency is 200kHz. What is the wavelength for a transmitter operating at 100kHz?
a
7500m
b
300m
c
75m
d
15m
Explanation
Correct Option
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Discussions (25)

fabamz01
3 months ago
The correct answer should me 3m. Cuz we are meant to convert the 1500mm to m.... Omoo, mk this kain confusion no sup for exam hall oo
🤲

King33Victor
2 months ago
solution
data given:
∆1 = 1500mm
∆2 =??
f1 = 200
f2 = 100
since both frequency are in the same unit, u leave it like that.
reccal:
V = f∆
f1∆1 = f2∆2
200 x 1500 = 100 x ∆2
300000 = 100∆2
∆2 = 300000/100
∆2 = 3000mm
convert to m
∆2 = 3000/1000
∆2 = 3m.
please my school review this question there is no correct option in there.

red_kwatwa
2 months ago
It's meant to be 100,000 not 1,000,000 and therefore the answer should be 0.3
Am I right?

kingsley600
8 years ago
The correct answer is 750
Lamda/f1 = lamda/f2
f1=200kHz=200000Hz
f2=100KHz=100000Hz
1500/200000 = X/100000
1500 × 100000 = 200000x
150,000,000/200,000=X
X=750





