Investigating the Photoelectric Effect (HSC SSCE Physics): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
Who first observed the photoelectric effect in 1887?
Who first observed the photoelectric effect in 1887?
Heinrich Hertz
Why is a quartz window used in the photoelectric apparatus instead of ordinary glass?
Why is a quartz window used in the photoelectric apparatus instead of ordinary glass?
Ordinary glass absorbs UV light
What happens if light below the cut-off frequency strikes the metal, regardless of intensity?
What happens if light below the cut-off frequency strikes the metal, regardless of intensity?
No photocurrent is produced
What does increasing light intensity affect (when frequency exceeds )?
What does increasing light intensity affect (when frequency exceeds )?
Number of photoelectrons emitted
What time delay occurs between light striking the metal and photoelectron emission?
What time delay occurs between light striking the metal and photoelectron emission?
No time delay at all
If stopping voltage is 2.5 V, what is (use C)?
If stopping voltage is 2.5 V, what is (use C)?
J
What does the work function represent for a metal?
What does the work function represent for a metal?
Minimum energy to remove an electron
On a vs frequency graph, what does the slope represent for different metals?
On a vs frequency graph, what does the slope represent for different metals?
A universal constant (same for all)
What did classical wave theory incorrectly predict about photoelectron emission?
What did classical wave theory incorrectly predict about photoelectron emission?
Emission occurs at any frequency
Why do copper and sodium have different cut-off frequencies?
Why do copper and sodium have different cut-off frequencies?
They have different work functions