Question

A body is placed on rough inclined plane of inclination θ. As angle θ is increased from 0∘ to 90∘ the contact force between the block and plane

Answer 1

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Answer 2

Answer:

Explanation:The operating principle is that – caused by the photoelectric effect – photons striking a photocathode at the entrance window of a PMT produce electrons, which are then accelerated by a high-voltage field and multiplied in number within a chain of dynodes by the process of secondary emission.