Questions

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.

This question can be best solved by the elimination technique. 'was delayed budget allocation', 'was delayed industry which' and 'was delayed debating over' do not make sense; hence P, Q and S can't follow the first segment. This eliminates options 1, 2 and 4. Option 5 places S after R which makes the resultant segment as 'lawmakers were busy industry' which is illogical; hence option 5 can also be eliminated. Hence, the correct sequence is RQPS.

‘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.

England has hosted the ICC World Cup most times. In 1975, 1979, 1983, 1999 & 2019 it hosted.