ScienceAges 13-15

Refraction & refractive index of light

Use refractive index n = λ₀ ÷ λ to calculate the reduced wavelength of monochromatic light inside an optical medium. Review suitability for your learners before teaching.

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Worksheet StudioPractice pack · Ages 13-15

Refraction & refractive index of light

Take your time. Show your thinking.

1. A monochromatic light beam has wavelength 336 nm in a vacuum and enters a transparent medium with refractive index n = 1.6. Calculate its wavelength inside the medium.
Vacuum: λ₀ = 336 nm · Medium (n = 1.6): λ = λ₀ ÷ n
2. A monochromatic light beam has wavelength 826 nm in a vacuum and enters a transparent medium with refractive index n = 1.4. Calculate its wavelength inside the medium.
Vacuum: λ₀ = 826 nm · Medium (n = 1.4): λ = λ₀ ÷ n
3. A monochromatic light beam has wavelength 624 nm in a vacuum and enters a transparent medium with refractive index n = 2.4. Calculate its wavelength inside the medium.
Vacuum: λ₀ = 624 nm · Medium (n = 2.4): λ = λ₀ ÷ n
4. A monochromatic light beam has wavelength 450 nm in a vacuum and enters a transparent medium with refractive index n = 1.5. Calculate its wavelength inside the medium.
Vacuum: λ₀ = 450 nm · Medium (n = 1.5): λ = λ₀ ÷ n
5. A monochromatic light beam has wavelength 774 nm in a vacuum and enters a transparent medium with refractive index n = 1.8. Calculate its wavelength inside the medium.
Vacuum: λ₀ = 774 nm · Medium (n = 1.8): λ = λ₀ ÷ n
6. A monochromatic light beam has wavelength 686 nm in a vacuum and enters a transparent medium with refractive index n = 1.4. Calculate its wavelength inside the medium.
Vacuum: λ₀ = 686 nm · Medium (n = 1.4): λ = λ₀ ÷ n
7. A monochromatic light beam has wavelength 1040 nm in a vacuum and enters a transparent medium with refractive index n = 1.6. Calculate its wavelength inside the medium.
Vacuum: λ₀ = 1040 nm · Medium (n = 1.6): λ = λ₀ ÷ n
8. A monochromatic light beam has wavelength 528 nm in a vacuum and enters a transparent medium with refractive index n = 1.2. Calculate its wavelength inside the medium.
Vacuum: λ₀ = 528 nm · Medium (n = 1.2): λ = λ₀ ÷ n
9. A monochromatic light beam has wavelength 330 nm in a vacuum and enters a transparent medium with refractive index n = 1.5. Calculate its wavelength inside the medium.
Vacuum: λ₀ = 330 nm · Medium (n = 1.5): λ = λ₀ ÷ n
10. A monochromatic light beam has wavelength 1056 nm in a vacuum and enters a transparent medium with refractive index n = 2.4. Calculate its wavelength inside the medium.
Vacuum: λ₀ = 1056 nm · Medium (n = 2.4): λ = λ₀ ÷ n
11. A monochromatic light beam has wavelength 648 nm in a vacuum and enters a transparent medium with refractive index n = 1.2. Calculate its wavelength inside the medium.
Vacuum: λ₀ = 648 nm · Medium (n = 1.2): λ = λ₀ ÷ n
12. A monochromatic light beam has wavelength 672 nm in a vacuum and enters a transparent medium with refractive index n = 1.2. Calculate its wavelength inside the medium.
Vacuum: λ₀ = 672 nm · Medium (n = 1.2): λ = λ₀ ÷ n

12 questions · Seed 104729 · Age guidance, not curriculum certification

View the answer key

Worksheet StudioAnswer key · Ages 13-15

Refraction & refractive index of light

Answers and reasoning. Review before teaching.

1. A monochromatic light beam has wavelength 336 nm in a vacuum and enters a transparent medium with refractive index n = 1.6. Calculate its wavelength inside the medium.
210 nm
Inside a medium of refractive index n, wavelength is reduced by a factor of n: λ = 336 nm ÷ 1.6 = 210 nm.
2. A monochromatic light beam has wavelength 826 nm in a vacuum and enters a transparent medium with refractive index n = 1.4. Calculate its wavelength inside the medium.
590 nm
Inside a medium of refractive index n, wavelength is reduced by a factor of n: λ = 826 nm ÷ 1.4 = 590 nm.
3. A monochromatic light beam has wavelength 624 nm in a vacuum and enters a transparent medium with refractive index n = 2.4. Calculate its wavelength inside the medium.
260 nm
Inside a medium of refractive index n, wavelength is reduced by a factor of n: λ = 624 nm ÷ 2.4 = 260 nm.
4. A monochromatic light beam has wavelength 450 nm in a vacuum and enters a transparent medium with refractive index n = 1.5. Calculate its wavelength inside the medium.
300 nm
Inside a medium of refractive index n, wavelength is reduced by a factor of n: λ = 450 nm ÷ 1.5 = 300 nm.
5. A monochromatic light beam has wavelength 774 nm in a vacuum and enters a transparent medium with refractive index n = 1.8. Calculate its wavelength inside the medium.
430 nm
Inside a medium of refractive index n, wavelength is reduced by a factor of n: λ = 774 nm ÷ 1.8 = 430 nm.
6. A monochromatic light beam has wavelength 686 nm in a vacuum and enters a transparent medium with refractive index n = 1.4. Calculate its wavelength inside the medium.
490 nm
Inside a medium of refractive index n, wavelength is reduced by a factor of n: λ = 686 nm ÷ 1.4 = 490 nm.
7. A monochromatic light beam has wavelength 1040 nm in a vacuum and enters a transparent medium with refractive index n = 1.6. Calculate its wavelength inside the medium.
650 nm
Inside a medium of refractive index n, wavelength is reduced by a factor of n: λ = 1040 nm ÷ 1.6 = 650 nm.
8. A monochromatic light beam has wavelength 528 nm in a vacuum and enters a transparent medium with refractive index n = 1.2. Calculate its wavelength inside the medium.
440 nm
Inside a medium of refractive index n, wavelength is reduced by a factor of n: λ = 528 nm ÷ 1.2 = 440 nm.
9. A monochromatic light beam has wavelength 330 nm in a vacuum and enters a transparent medium with refractive index n = 1.5. Calculate its wavelength inside the medium.
220 nm
Inside a medium of refractive index n, wavelength is reduced by a factor of n: λ = 330 nm ÷ 1.5 = 220 nm.
10. A monochromatic light beam has wavelength 1056 nm in a vacuum and enters a transparent medium with refractive index n = 2.4. Calculate its wavelength inside the medium.
440 nm
Inside a medium of refractive index n, wavelength is reduced by a factor of n: λ = 1056 nm ÷ 2.4 = 440 nm.
11. A monochromatic light beam has wavelength 648 nm in a vacuum and enters a transparent medium with refractive index n = 1.2. Calculate its wavelength inside the medium.
540 nm
Inside a medium of refractive index n, wavelength is reduced by a factor of n: λ = 648 nm ÷ 1.2 = 540 nm.
12. A monochromatic light beam has wavelength 672 nm in a vacuum and enters a transparent medium with refractive index n = 1.2. Calculate its wavelength inside the medium.
560 nm
Inside a medium of refractive index n, wavelength is reduced by a factor of n: λ = 672 nm ÷ 1.2 = 560 nm.

12 questions · Seed 104729 · Age guidance, not curriculum certification

Worksheet StudioPractice pack · Ages 13-15

Refraction & refractive index of light

Take your time. Show your thinking.

1. A monochromatic light beam has wavelength 336 nm in a vacuum and enters a transparent medium with refractive index n = 1.6. Calculate its wavelength inside the medium.
Vacuum: λ₀ = 336 nm · Medium (n = 1.6): λ = λ₀ ÷ n
2. A monochromatic light beam has wavelength 826 nm in a vacuum and enters a transparent medium with refractive index n = 1.4. Calculate its wavelength inside the medium.
Vacuum: λ₀ = 826 nm · Medium (n = 1.4): λ = λ₀ ÷ n
3. A monochromatic light beam has wavelength 624 nm in a vacuum and enters a transparent medium with refractive index n = 2.4. Calculate its wavelength inside the medium.
Vacuum: λ₀ = 624 nm · Medium (n = 2.4): λ = λ₀ ÷ n
4. A monochromatic light beam has wavelength 450 nm in a vacuum and enters a transparent medium with refractive index n = 1.5. Calculate its wavelength inside the medium.
Vacuum: λ₀ = 450 nm · Medium (n = 1.5): λ = λ₀ ÷ n
5. A monochromatic light beam has wavelength 774 nm in a vacuum and enters a transparent medium with refractive index n = 1.8. Calculate its wavelength inside the medium.
Vacuum: λ₀ = 774 nm · Medium (n = 1.8): λ = λ₀ ÷ n
6. A monochromatic light beam has wavelength 686 nm in a vacuum and enters a transparent medium with refractive index n = 1.4. Calculate its wavelength inside the medium.
Vacuum: λ₀ = 686 nm · Medium (n = 1.4): λ = λ₀ ÷ n
7. A monochromatic light beam has wavelength 1040 nm in a vacuum and enters a transparent medium with refractive index n = 1.6. Calculate its wavelength inside the medium.
Vacuum: λ₀ = 1040 nm · Medium (n = 1.6): λ = λ₀ ÷ n
8. A monochromatic light beam has wavelength 528 nm in a vacuum and enters a transparent medium with refractive index n = 1.2. Calculate its wavelength inside the medium.
Vacuum: λ₀ = 528 nm · Medium (n = 1.2): λ = λ₀ ÷ n
9. A monochromatic light beam has wavelength 330 nm in a vacuum and enters a transparent medium with refractive index n = 1.5. Calculate its wavelength inside the medium.
Vacuum: λ₀ = 330 nm · Medium (n = 1.5): λ = λ₀ ÷ n
10. A monochromatic light beam has wavelength 1056 nm in a vacuum and enters a transparent medium with refractive index n = 2.4. Calculate its wavelength inside the medium.
Vacuum: λ₀ = 1056 nm · Medium (n = 2.4): λ = λ₀ ÷ n
11. A monochromatic light beam has wavelength 648 nm in a vacuum and enters a transparent medium with refractive index n = 1.2. Calculate its wavelength inside the medium.
Vacuum: λ₀ = 648 nm · Medium (n = 1.2): λ = λ₀ ÷ n
12. A monochromatic light beam has wavelength 672 nm in a vacuum and enters a transparent medium with refractive index n = 1.2. Calculate its wavelength inside the medium.
Vacuum: λ₀ = 672 nm · Medium (n = 1.2): λ = λ₀ ÷ n

12 questions · Seed 104729 · Age guidance, not curriculum certification

Worksheet StudioAnswer key · Ages 13-15

Refraction & refractive index of light

Answers and reasoning. Review before teaching.

1. A monochromatic light beam has wavelength 336 nm in a vacuum and enters a transparent medium with refractive index n = 1.6. Calculate its wavelength inside the medium.
210 nm
Inside a medium of refractive index n, wavelength is reduced by a factor of n: λ = 336 nm ÷ 1.6 = 210 nm.
2. A monochromatic light beam has wavelength 826 nm in a vacuum and enters a transparent medium with refractive index n = 1.4. Calculate its wavelength inside the medium.
590 nm
Inside a medium of refractive index n, wavelength is reduced by a factor of n: λ = 826 nm ÷ 1.4 = 590 nm.
3. A monochromatic light beam has wavelength 624 nm in a vacuum and enters a transparent medium with refractive index n = 2.4. Calculate its wavelength inside the medium.
260 nm
Inside a medium of refractive index n, wavelength is reduced by a factor of n: λ = 624 nm ÷ 2.4 = 260 nm.
4. A monochromatic light beam has wavelength 450 nm in a vacuum and enters a transparent medium with refractive index n = 1.5. Calculate its wavelength inside the medium.
300 nm
Inside a medium of refractive index n, wavelength is reduced by a factor of n: λ = 450 nm ÷ 1.5 = 300 nm.
5. A monochromatic light beam has wavelength 774 nm in a vacuum and enters a transparent medium with refractive index n = 1.8. Calculate its wavelength inside the medium.
430 nm
Inside a medium of refractive index n, wavelength is reduced by a factor of n: λ = 774 nm ÷ 1.8 = 430 nm.
6. A monochromatic light beam has wavelength 686 nm in a vacuum and enters a transparent medium with refractive index n = 1.4. Calculate its wavelength inside the medium.
490 nm
Inside a medium of refractive index n, wavelength is reduced by a factor of n: λ = 686 nm ÷ 1.4 = 490 nm.
7. A monochromatic light beam has wavelength 1040 nm in a vacuum and enters a transparent medium with refractive index n = 1.6. Calculate its wavelength inside the medium.
650 nm
Inside a medium of refractive index n, wavelength is reduced by a factor of n: λ = 1040 nm ÷ 1.6 = 650 nm.
8. A monochromatic light beam has wavelength 528 nm in a vacuum and enters a transparent medium with refractive index n = 1.2. Calculate its wavelength inside the medium.
440 nm
Inside a medium of refractive index n, wavelength is reduced by a factor of n: λ = 528 nm ÷ 1.2 = 440 nm.
9. A monochromatic light beam has wavelength 330 nm in a vacuum and enters a transparent medium with refractive index n = 1.5. Calculate its wavelength inside the medium.
220 nm
Inside a medium of refractive index n, wavelength is reduced by a factor of n: λ = 330 nm ÷ 1.5 = 220 nm.
10. A monochromatic light beam has wavelength 1056 nm in a vacuum and enters a transparent medium with refractive index n = 2.4. Calculate its wavelength inside the medium.
440 nm
Inside a medium of refractive index n, wavelength is reduced by a factor of n: λ = 1056 nm ÷ 2.4 = 440 nm.
11. A monochromatic light beam has wavelength 648 nm in a vacuum and enters a transparent medium with refractive index n = 1.2. Calculate its wavelength inside the medium.
540 nm
Inside a medium of refractive index n, wavelength is reduced by a factor of n: λ = 648 nm ÷ 1.2 = 540 nm.
12. A monochromatic light beam has wavelength 672 nm in a vacuum and enters a transparent medium with refractive index n = 1.2. Calculate its wavelength inside the medium.
560 nm
Inside a medium of refractive index n, wavelength is reduced by a factor of n: λ = 672 nm ÷ 1.2 = 560 nm.

12 questions · Seed 104729 · Age guidance, not curriculum certification