Welcome to your PGTRB PHYSICS QUIZ-01
1.
Who invented the laser?
2.
Rocket operates (works) on the principle of
3.
Light from the sun reaches earth in about
4.
Thermosphere is the ___ layer of atmosphere above the surface of our earth.
6.
Which of the following device is fully duplex?
8.
The product of the moment of inertia and the angular acceleration is
9.
The maximum displacement of a particle in the upward direction is
