Radio telescope is a device used in radio astronomy for detecting and recording radio waves coming from stars and other celestial objects.
60) Radio telescopes are better than optical telescopes because
Answer is:
All of these
Explanation:
Related General Physics MCQ with Answers
Answer is:
visible rays
Explanation:
Bandgap energy in LED semiconducting material is normally in the visible region. i.e. 380nm to 760nm.
Answer is:
Moment of inertia and moment of a force
Explanation:
Moment of inertia (I) = mr2 = (mass * length * length) = ML2 Moment of force (TORQUE) = I * angular acceleration)= M L3 T(-2)
Answer is:
mercury has greater visibility than water
Explanation:
If water were used instead of mercury, the height of the column required would be very large. The density of mercury being much more than that of water, it expands lesser and thus can be used in manageable tubes. There is nothing limiting us from using water instead of mercury except the height of the tube.
Answer is:
total internal reflection
Explanation:
Optical fibre works on total internal reflection.