試題詳解

15. Consider refraction of a wave, what changes as wave enters from medium I to mediurn II with different index of refraction? (i) wavelength changes (ii) frequency changes (iii) amplitude changes (iv) wave speed changes
(A)(i) (iii),
(B)(i)(ii) (iv),
(C)(ii) (iv),
(D) (ii)(iii)(iv),
(E) none of the above.