Q.62 An antenna pointing in a certain direction has a noise temperature of 50 K. The ambient temperature is 290 K. The antenna is connected to pre-amplifier that has a noise figure of 2 dB and an available gain of 40 dB over
an effective bandwidth of 12 MHz. The effective input noise temperature 
for the amplifier and the noise power
at the output of the preamplifier, respectively, are
Answer: (A)
Explanation:
