Practice Objective (6.1) - Dual Nature of Matter and Radiation

Practise this section

11 questions

Flashcard drill
5 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
Sign up to start the exercise
Quiz
5 questions · about 3 min · pass mark 70%. Hints available.
Sign up to start the quiz

6 sample questions

Question 1.
What is the photoelectric effect?
Show hintHide hint
Think about light and metal interaction.
Question 2.
What does 'h' represent in Einstein’s equation?
Show hintHide hint
It's a fundamental constant in quantum mechanics.
3Question 3.
What is the nature of light as proposed by wave-particle duality?
- Only a wave
- Only a particle
- Both wave and particle
Show hintHide hint
Recall the definitions of waves and particles.
4Question 4.
True or False: Increasing the frequency of light always increases the intensity.
- True
- False
Show hintHide hint
Think about how intensity and frequency are different.
Question 5.
Using a metal with a work function of 4 eV, calculate the threshold frequency for the photoelectric effect.
Show hintHide hint
Start with the equation for threshold frequency.
Question 6.
Design an experiment that uses the photoelectric effect to determine the Planck constant.
Show hintHide hint
Think about how you can measure electrical output from emitted electrons.

7 more questions in this section. Enroll free to practise them all.