Geometric Optics + Spherical Reflection

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21 Terms

1

Light

Form of energy travels at speed of 2.99×10^8

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2

Reflection

Bouncing of Light from surface of object

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3

Diffuse Reflection

When light strikes a non-smooth surface; reflected light scattered in all directions

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4

Regular Reflection

If surface that light strikes is silvered + polished smooth then reflected as as single beam

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5

Normal

Line/Vector perpendicular to a surface

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6

1st Law of Light Reflection

Incident Ray, Normal at Incidence, Reflected Ray all lie on the same plane

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7

2nd Law of Light Reflection

Angle of Incidence = Angle of Reflection (i=r)

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8

Virtual Image

Image formed by the apparent intersection of Rays; can’t be formed on a screen

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9

Lateral Inversion

Image of right hand in a plane mirror is a left hand

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10

Parallax

Apparent movement of one object relative to another due to the motion of the observer. The object which is further away appears to move with the observer

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11

Concave; Ray strikes pole

Ray reflected back on the other side of the axis with refl ang = inc ang

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12

Concave; Ray passes through Centre of Curvature

Reflected back along its own path

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13

Concave; Ray parallel to axis

Ray passes through focus after reflection

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14

Concave; Ray that passes through focus

Ray comes out parallel to axis

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15

Real Image

Image formed by actual intersection of rays; can be formed on a screen.

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16

Real Image; Concave; Where is source? How looks?

Object’s outside focus, Image is inverted + in front of mirror

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17

Virtual Image; Concave; Where is source? How looks?

Object inside/at focus, Image upright/erect, magnified + behind mirror

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18

Convex; Ray strikes pole

Reflected at equal angle w axis

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19

Convex; Ray heading for centre of curvature

Reflected back along its own path

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20

Convex; Ray heading for fuces

Reflected parallel to axis

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21

Convex Image Nature

Virtual, Upright, Diminished, Behind Mirror

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