Optics Unit Math Q’s
1. Image by a converging lens located at 8 cm. Object is 24 cm in front of lens. What is focal length?
2. What is the magnification of the lens?
3. Calculate the angle of refraction for light as it passes from air, at an incidence angle of 25°, to each
of the mediums.
a. Water (n=1.33)
b. Diamond (n=2.42)
4. An object 25 cm away from a lens produces a focused image on a film 15 cm away. What is the
focal length of the converging lens?
6. Solve for the missing variable
a) M = 4 di = 16 cm
b) M = 6 ho = 2 mm
c) do = 22 cm di = 53 cm
7. An angle of incidence of 20° in water results in an angle of refraction of 15°.
a. Is the second medium more of less optically dense than the first medium?
b. Find the n of the second medium
Optics Unit Math Q’s
1. Image by a converging lens located at 8 cm. Object is 24 cm in front of lens. What is focal length?
2. What is the magnification of the lens?
3. Calculate the angle of refraction for light as it passes from air, at an incidence angle of 25°, to each
of the mediums.
a. Water (n=1.33)
b. Diamond (n=2.42)
4. An object 25 cm away from a lens produces a focused image on a film 15 cm away. What is the
focal length of the converging lens?
6. Solve for the missing variable
a) M = 4 di = 16 cm
b) M = 6 ho = 2 mm
c) do = 22 cm di = 53 cm
7. An angle of incidence of 20° in water results in an angle of refraction of 15°.
a. Is the second medium more of less optically dense than the first medium?
b. Find the n of the second medium
Optics Unit Math Q’s
1. Image by a converging lens located at 8 cm. Object is 24 cm in front of lens. What is focal length?
2. What is the magnification of the lens?
3. Calculate the angle of refraction for light as it passes from air, at an incidence angle of 25°, to each
of the mediums.
a. Water (n=1.33)
b. Diamond (n=2.42)
4. An object 25 cm away from a lens produces a focused image on a film 15 cm away. What is the
focal length of the converging lens?
6. Solve for the missing variable
a.a) M = 4 di = 16 cm b) M = 6 ho = 2 mm
c) do = 22 cm di = 53 cm
7. An angle of incidence of 20° in water results in an angle of refraction of 15°.
a. Is the second medium more of less optically dense than the first medium?
b. Find the n of the second medium
Optics Unit Math Q’s
5. Image by a converging lens located at 8 cm. Object is 24 cm in front of lens. What is
focal length?
6. What is the magnification of the lens?
7. Calculate the angle of refraction for light as it passes from air, at an incidence angle of
25°, to each of the mediums.
a. Water (n=1.33)
b. Diamond (n=2.42)
8. An object 25 cm away from a lens produces a focused image on a film 15 cm away.
What is the focal length of the converging lens?
6. Solve for the missing variable
a) M = 4 di = 16 cm
b) M = 6 ho = 2 mm
c) do = 22 cm di = 53 cm
7. An angle of incidence of 20° in water results in an angle of refraction of 15°.
a. Is the second medium more of less optically dense than the first medium?
b. Find the n of the second medium