........ and ........ metals are use in photoelectric cells.

1.	........ and ........ metals are use in photoelectric cells.
Answer» <html><body><p></p><a href="https://interviewquestions.tuteehub.com/tag/solution-25781" style="font-weight:bold;" target="_blank" title="Click to know more about SOLUTION">SOLUTION</a> :<a href="https://interviewquestions.tuteehub.com/tag/cesium-407908" style="font-weight:bold;" target="_blank" title="Click to know more about CESIUM">CESIUM</a>, <a href="https://interviewquestions.tuteehub.com/tag/potassium-603438" style="font-weight:bold;" target="_blank" title="Click to know more about POTASSIUM">POTASSIUM</a></body></html>

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