JAMB Physics 2011 Objective — Question 42
Question 42 of 49 from the Joint Admissions and Matriculation Board (JAMB) Physics 2011 Objective paper, with the correct answer and a full explanation.
Advertisement
If the threshold frequency for tungsten is 1.3 x 10^15 Hz, what is its work function? [h=6.6 x 10⁻³⁴Js]
- A. A. 8.58 x 10⁻¹⁷ J
- B. B. 8.85 x 10⁻¹⁸J
- C. C. 8.58 x 10⁻¹⁹ JCorrect
- D. D. 8.58 x 10⁻¹⁵ J
Explanation
Work function, W0 = hf0 = 6.6x10⁻³⁴ x 1.3x10^15 = 8.58x10⁻¹⁹J.
Advertisement
Sign up free to unlock
- Score tracking
- Practice history
- Saved questions
- Progress dashboard
- Personalized sessions
- Weak-topic breakdown
…and/or go further with premium services and No Ads.