Light travels from a medium with n = 1.25 into a medium of n = 1.34, at an angle

Question

Light travels from a medium with n = 1.25 into a medium of n = 1.34, at an angle o 27 degree t e normal to the interface of the two media, (a) Will the speed of the light increase, decrease, or remain the same? (b) Will the wavelength of the light increase, decrease, or remain the same? (c) Will the light bend toward the normal, away from the normal, or not at all? Light travels from a medium with n = 1.63 into a medium of n = 1.42, along the normal to the interface of the two media, (a) Will the speed of the light increase, decrease, or remain the same? (b) Will the wavelength of the light increase, decrease, or remain the same? (c) Will the light bend toward the normal, away from the normal, or not at all?

Explanation / Answer

When light travells from one medium to another of refractive indices, say n1 to n2, the following should be noticed: sin(i)/sin(r)=n2/n1, this is known as snell's law. 1. Now, if v1 is the velocity in n1 and v2 in n2, by snell's law: n2/n1=v1/v2. So Velocity Changes so that n2/n1 remains constant. in question 1 ans)n2>n1 so v2 incresae in question ans) n2n1 so it will also increase. in question n2

Related Questions

Navigate

• Browse (All)
• Browse L
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.