Post Utme Eksu 2017 Physics Question 40

Practice objective / multiple choice question 40 from the 2017 Post Utme Eksu Physics examination.

Post Utme Eksu 2017 Physics Objective / Multiple Choice

Question 40 POST_UTME_EKSU • 2017 • PHYSICS • objective

A wave of wavelength $\lambda$ and frequency $f$ is incident on a barrier of width $d$. If the wave is partially reflected, what is the intensity of the reflected wave?

Correct Answer A. \frac{$ I_0 $$ \sin^2\( \frac{\pi d}{\lambda} \ $)}{$ 1 - \( \frac{\sin(\frac{\pi d}{\lambda} \ $)^2)}

B. \frac{$ I_0 $$ \sin^2\( \frac{\pi d}{\lambda} \ $)}{$ 1 + \( \frac{\sin(\frac{\pi d}{\lambda} \ $)^2)}

C. \frac{$ I_0 $$ \sin^2\( \frac{\pi d}{\lambda} \ $)}{$ 1 - \( \frac{\sin(\frac{\pi d}{\lambda} \ $)^2)}

D. \frac{$ I_0 $$ \sin^2\( \frac{\pi d}{\lambda} \ $)}{$ 1 + \( \frac{\sin(\frac{\pi d}{\lambda} \ $)^2)}

Correct Answer

Correct Option:

\frac{$ I_0 $$ \sin^2\( \frac{\pi d}{\lambda} \ $)}{$ 1 - \( \frac{\sin(\frac{\pi d}{\lambda} \ $)^2)}

This is Post Utme Eksu 2017 Physics Question 40. It is one of the objective questions from the 2017 Post Utme Eksu Physics examination.

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