Questions

DOZENS.

If we remove 'S' from it, it is DOZEN which tells that 12.

The photoelectric effect pointed to the particle properties of light, which had been considered to be a wave phenomenon. Particles like electron and protons have both particle like and wave like behavior. Thus, according to de Broglie, all the material particles in motion possess wave characteristics. Although the dual nature of matter is applicable to all material objects but it is significant for microscopic bodies only.

The first computers used vacuum tubes for circuitry and magnetic drums for memory, and were often enormous, taking up entire rooms.

The unit which is used to measure weighted average atomic mass is Atomic Mass Unit (amu).

The amu or gram/mole can also be used for this measure.

‘ought’ represents advice, ‘would’ represents strong possibility of an event here. ‘would have’ will be the correct grammatical expression here. The sentence expresses that the accused was not sent to jail because of one witness.