Untitled Flashcards Set

In what direction does a ray that goes parallel to the axis travel after reflecting off a convex mirror?
The ray reflects away from the focal point.

As the frequency of a light wave increases, the wavelength
decreases.

When red light is compared with violet light,
both travel at the same speed.

What are the three primary colors of additive light?
Red, Blue, Green.

Which of the following best describes the image produced by a flat mirror?
virtual, upright, and same size.

Which portion of the electromagnetic spectrum is used for tv/dvd remote controls?
infrared waves.

If a light ray strikes a flat mirror at an angle of 27º from the normal, the reflected ray will be
27º from the normal.

When light passes into a new medium, instead of the velocity staying constant, the __ stays constant.
Frequency.

When playing tackle football, you get tackled and have your face planted into the grass when you have a physics moment and realize that
All the colors from the sun are being absorbed, except green, which is being reflected.

Frequency and energy are
directly proportional.

When light passes into a new medium, instead of the velocity staying constant, the __ stays constant.
Frequency.

Frequency and period are __ related.
inversely.

Part of a straw that is placed in a glass of water appears bent in relation to the part of the straw that extends out of the water. What is this phenomenon called?
Refraction.

The frequency of a radio wave with a wavelength of 2.2 m is
1.36x10^8.

Which best describes the image of a concave mirror when the object is located between the focal point and the mirror?
virtual, upright, and larger.

If you looked at a light through the lenses from two polarizing sunglasses that were overlapped at right angles to each other,
none of the light would pass through.

Which best describes the image of a diverging lens when the object is between the focal point and the lens?
virtual, upright, and smaller.

Frequency and energy are
directly proportional.

Which best describes the image of a diverging lens when the object is placed farther away than the focal point?
virtual, upright, and smaller.

Which best describes the image of a converging lens when the object is located somewhere beyond twice the focal distance from the lens?
real, inverted, and smaller.

Which of the following has the greatest energy?
Gamma waves.

Which of the following is the electromagnetic spectrum in order from short wavelength to long wavelength?
gamma, x-ray, ultraviolet, visible, infrared, radio.

Which of these travels the fastest?
All are the same.

If you looked at a light through the lenses from two polarizing sunglasses that were overlapped at right angles to each other,
none of the light would pass through.

A convex mirror with a focal length of –20.0 cm has a 5 cm object 30.0 cm in front of the mirror. What is the value of di?
-12cm.

The frequency of an infrared light with a wavelength of 100x10^-6m is
3x10^12Hz.

Which best describes the image of a concave mirror when the object is located between the focal point and the mirror?
virtual, upright, and larger.

What color will a cyan folder look under red light?
black.

Which of the following is the electromagnetic spectrum in order from short wavelength to long wavelength?
gamma, x-ray, ultraviolet, visible, infrared, radio.

A ray of light in air is incident on an air-to-glass boundary at an angle of exactly 30.0º with the normal. If the index of refraction of the glass is 1.65, what is the angle of the refracted ray within the glass with respect to the normal?
18.0º.

A ray of light in air is incident on an air-to-diamond boundary at an angle of exactly 30.0º with the normal. What is the angle of the refracted ray within the diamond (n = 2.45) with respect to the normal?
11.8°.

If you stand 3.0 m in front of a flat (plane) mirror, how far away from you would your image be in the mirror?
3.0.

A film projector produces a 0.75 m image of a tree on a screen. If the projector lens is 3.00 m from the screen and the size of the tree on the film is 0.85 cm, what is the magnitude of the magnification of the image?
88.2.

In order for Sherlock Holmes to investigate a clue with his convex lens (Magnifying Glass), what must he do?
Move the clue between f and the lens.

Which of the following is the electromagnetic spectrum in order from high frequency to low frequency?
gamma, x-ray, ultraviolet, visible, infrared, radio.

Which of the following has the greatest energy?
gamma waves.

The frequency of a microwave wave with a wavelength of 12 cm is
2.54x10^9Hz.

Which best describes the image of a converging lens when the object is located somewhere beyond twice the focal distance from the lens?
real, inverted, and smaller.