Through which light cannot pass?
A). Notebook paper
B). Water
C). Book
D). Sun glasses
1. Pure water is bad conductor of electricity because it is
3. What is the unit of the physical quantity Entropy?
4. What is the unit of the physical quantity "Inductance"?
6. Fibre optics work on the principle of
7. Which phenomena shows the particle nature of light?
8. Alternating current is converted into direct current by a
9. For photoelectric effect to take place, the metal used as the cathode should have ________