light Flashcards

1
Q

speed of light is less

A

high refractive index

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2
Q

refraction in low density to high

A

light bend towards normal line

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3
Q

high density to low

A

light move far

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4
Q

dispersion of which light is max

A

violet

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5
Q

speed of which colour is min in glass

A

violet

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6
Q

whviloet ray

A

lowest wave length and highest frequency

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7
Q

red light

A

high wavelength and low frequ

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8
Q

mirage formation

A

refraction and total internal reflection

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9
Q

dentist use which mirror

A

concave

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10
Q

concave mirrior

A

converge

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11
Q

canvex lens

A

converge

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12
Q

focal length of convex lens

A

positive and image is real and inverted

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13
Q

in which condition image form by cancave mirror is behind and virtual erect and magnified

A

between pole and focus

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14
Q

solar radiation visible

A

400-700 nm

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15
Q

wave length of visible light

A

390-780

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16
Q

eye is most sensetive to

A

yellow green light 5500 A

17
Q

LIGHT TRAVEl in stratight line because

A

its wavelength is low

18
Q

sun take aprox

A

8.5 min

19
Q

when light travel from one medium to another the n what will not change

A

frequency

20
Q

mirage

A

total internal reflection

21
Q

car niror

A

convex

22
Q

barber

A

concave mirroerag

23
Q

image form by astronomical telescope

A

virtual and magnified

24
Q

air buuble act like

A

concave lens

25
Q

minimum heught to see a person

A

half

26
Q

long sightness

A

convex lens

27
Q

reading glass

A

convex lensmy

28
Q

myopia

A

concave lens

29
Q

eye visibility

A

25 cm

30
Q

sunlight contains

A

7 colours

31
Q

speed of which light is minimum and maximum

A

viloet minimum and red maximum

32
Q

maximum deviation on prism

A

violet

33
Q

for a critical angle light must pass from denser medium to rarer mediuum

A
34
Q

image form in plane mirror

A

inverted and virtual

35
Q

mirror use in torch

A

concave

36
Q

focal length of concave lens

A

negative

37
Q

in long sightness images are formed

A

behind retina

38
Q
A