Solve this : 1 Red light, however bright, cannot cause emission of electron from a clean zinc surface - Physics - Atoms

Question

Solve this :

1 Red light, however bright, cannot cause emission of electron from
a clean zinc surface But even weak ultraviolet radiations can do so
Why ?
2 Name the series of hydrogen spectrum lying in the
ultraviolet region

Vaibhav Tiwari · Accepted Answer

Kindly ask different queries in different thread Also, refer the
similar link of 2nd question
https://www meritnation
com/ask-answer/question/which-series-of-hydrogen-spectrum-lies-in-i-visible-reg/classification-of-elements-and-periodicity-in-properties/7161015

Solve this : 1. Red light, however bright, cannot cause emission of electron from a clean zinc surface. But even weak ultraviolet radiations can do so. Why ? 2. Name the series of hydrogen spectrum lying in the ultraviolet region.

Solve this :

1. Red light, however bright, cannot cause emission of electron from a clean zinc surface. But even weak ultraviolet radiations can do so. Why ?
2. Name the series of hydrogen spectrum lying in the ultraviolet region.