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Physics > Chapter 25 Light > Flashcards

Chapter 25 Light Flashcards

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0
Q

Parallel light rays strike a rough irregular surface causing the reflected rays to go in all directions

A

Diffuse reflection

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1
Q

When parallel light rays strike a smooth plane surface and the reflected rays are parallel to each other

A

Specular reflection

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2
Q

What are the properties of images reflected in a mirror

A

Image is upright
Image is same size
Image is located as far behind the mirror as in front of it
Image is flipped front to back

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3
Q

When none of the light rays emanate from the mirror

A

Virtual image

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4
Q

What mirror is usually associated with virtual images

A

Convex mirror

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5
Q

Produced by curved mirrors and all the light rays emanate from the image

A

Real image

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6
Q

With what mirror are real images associated with

A

Concave mirrors

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7
Q

What size image is needed in order to view full length in a mirror

A

Half length mirror

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8
Q

What becomes possible when a double reflection occurs

A

An additional image

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9
Q

Inside surface of spherical mirror is polished

A

Concave mirror

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10
Q

Outside surface of spherical mirror is polished

A

Convex mirror

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11
Q

Straight line drawn through the center of curvature C and the midpoint of the mirror

A

Principal axis

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12
Q

Image point at which reflected light rays near and parallel to the principal axis from a concave mirror converge

A

Focal point f

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13
Q

Rays that lie close to the principal axis.

A

Paraxial rays

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14
Q

The fact that a spherical mirror does not bring all rays parallel to the principal axis to a single image

A

Spherical aberration

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15
Q

Why is the refractive index greater than unity

A

Speed of light in material medium is less than it is for a vacuum

16
Q

What does the index of refraction depend slightly on

A

Wavelength and light

17
Q

What happens when light strikes interface btw two transparent materials

A

Divides into two parts
1 part is reflected
Remainder is transmitted across interface

18
Q

What happens if the incident ray doesn’t strike interface at normal incidence

A

Transmitted ray is refracted

19
Q

What happens to the refractive ray when light travels from a medium where refractive index is smaller into a medium where it is larger

A

Bends towards the normal

20
Q

What happens to refracted ray when light travels from medium where refractive index is larger into a medium where it is smaller

A

Bends away from normal line

Physics (13 decks)

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