Optics

Yellow light has a wavelength of 595 nm. What is its frequency?

which is not correct when describing the formation of rainbows?

• A rainbow is really spherical in nature

• sunlight is spread into a spectrum when it enters a spherical raindrop

• sunlight is internally reflected on the back side of a raindrop

• All wavelengths refract at the same angle

All of the following images can be formed by a converging lens except which one?

• image at infinity

• virtual, inverted, and same size

• real, inverted, and same size

• real, inverted, and reduced

All of the following images can be formed by a converging lens except which one?

• virtual, upright, and magnified

• real and point

• real, inverted, and magnified

• real, upright, and magnified

In what direction does a parallel ray from an object proceed after passing through a converging lens?

• The ray passes through the focal point, F

• the ray continues parallel to the principal axis

• the ray passes through the center of the lens

• the ray is directed away from the focal point, F

Carbon tetrachloride (n = 1.46) is poured into a container made of crown glass (n = 1.52). If a light ray in theglass is incident on the glass-to-liquid boundary and makes an angle of 30.0 with the normal, what is theangle of the corresponding refracted ray with respect to the normal?

• 25.6 degrees

• 28.7 degrees

• 31.4 degrees

• 64.4 degrees

When a light ray moves from air into glass, which has a higher index of refraction, its path is

• bent toward the normal

• bent away from the normal

• parallel to the normal

• not bent

light is not refracted when it is

• traveling from air into a glass of water at an angle of 35 degrees to the normal

• traveling from water into air at an angle of 35 degrees to the normal

• striking a wood surface at an angle of 75 degrees

• traveling from air into a diamond at an angle of 45 degrees

which of the following is not a primary subtractive color?

• yellow

• cyan

• magenta

• blue

Which of the following is not an additive primary color?

• yellow

• blue

• red

• green