Select the related word from the given

A simple microscope consists of :

Twinkling of the Stars is due to the phenomenon of 

Which statement about Cathode Rays is incorrect ?

What is the SI unit of G — the universal gravitation constant?

Which of the following liquids has the least density?

Which statement(s) about solenoids are INCORRECT?

Which Metal is found in the highest proportion in earth’s crust?

Sound and light waves both have ___________ .

The acceleration due to gravity ___________ with height

Which pioneer of the late 19th century is credited with using radio waves for signal transmission over several kilometers?