List I | List II | ||
---|---|---|---|
A. | TV | 1. | 1 kHz |
B. | Radio | 2. | 3 kHz |
C. | Telephony | 3. | 9 kHz |
D. | Telegraphy | 4. | 5 MHz |
Reason (R): For all magnetic materials, B increases linearly with I.
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