First slide

The optical instruments

Question

Which of the following is not correct regarding the radio telescope

Moderate

A

It can not work at night
B

It can detect a very faint radio signal
C

It can be operated even in cloudy weather
D

It is much cheaper than optical telescope

Solution

Radio, waves can pass through dust, clouds, fog, etc, in a radio, telescope. It can detect very faint radio signal due to enormous size of its reflector. So it can be used at night and even in cloudy weather.

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