Correct Answer - Option 1 : 1610 kHz
Concept:
Image frequency: The signal which causes interference is called ‘image frequency’
Image frequency and intermediate frequency is related as follows:
fsi = fs + 2 IF
fs: carrier frequency of the tuned station
fsi: image frequency
IF: Intermediate frequency
Calculation:
Given intermediate frequency (I.F) = 455 kHz
Tuned signal frequency is fs = 700 kHz
Image frequency is
fsi = 700 kHz + 2 × 455 kHz
fsi = 1610 kHz
