Communication JEE physics - Communication

• ✓
  $88$ to $108 \mathrm{MHz}$
• B
  $88$ to $108 \mathrm{kHz}$
• C
  $8$ to $88 \mathrm{MHz}$
• D
  $88$ to $108 \mathrm{GHz}$

Answer: A.

• A
  $60^{\circ}$
• B
  $75^{\circ}$
• C
  $45^{\circ}$
• ✓
  None of these

Answer: D.

• A
  The signal has more noise
• B
  The signal cannot be amplified for distance communication
• C
  The transmitting antenna length is very small to design
• ✓
  The transmitting antenna length is very large and impracticable / The signal is not a radio signal

Answer: D.

• A
  The amplitude of modulated wave varies as frequency of carrier wave
• ✓
  The frequency of modulated wave varies as amplitude of modulating wave
• C
  The amplitude of modulated wave varies as amplitude of carrier wave
• D
  The frequency of modulated wave varies as frequency of modulating wave/ The frequency of modulated wave varies as frequency of carrier wave

Answer: B.

• A
  Many wavelengths
• B
  Uncoordinated wave of a particular wavelength
• C
  Coordinated wave of many wavelengths
• ✓
  Coordinated waves of a particular wavelength

Answer: D.