?In the nuclear reactors, moderators are used to
1). Slow down the neutrons
2). Generate neutrons?
3). Accelerate neutrons
4). Absorb the neutrons?
1. Pycnometer is an instrument used to measure the
2. When the main switch of the house is put off it disconnects the
3. The velocity of sound is more in
4. The moment of inertia of a body does not depend upon
5. The humidity of the air depends upon
6. Which one of the following lenses should be used to correct the defect of astigmatism ?
7. What is the escape velocity of the rocket in the earth?
9. Which one among the following doesn't have any effect on velocity of sound ?
10. If a body slides over a surface, the force resisting the motion between them is called ______.