reflection and refraction

Question 1

explain why the word AMBULANCE is laterally inverted?

Answer 1

when the driver sees from their rear view mirror, it will be inverted again and appear correctly

Question 2

why laser cannot be seen in clear water but can be seen after milk is added?

Answer 2

milk contains proteins and fats and their molecules are large enough to reflect light into our eyes

Question 3

what is refraction of light?

Answer 3

light bends as it travels from one medium to another

Question 4

what is reflection of light?

Answer 4

light travels in the same medium

Question 5

speed of light in vacuum equals?

Answer 5

3.0x10^8m/s

Question 6

refractive index formula

Answer 6

n = speed of light in vacuum/speed of light in water

Question 7

snell’s law refraction formula

Answer 7

n1sini = n2sinr
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Question 8

what is critical angle?

Answer 8

the angle of incidence where light travels from a denser medium (water) to a less dense medium (air), the maximum possible angle of incidence in the denser medium 90°

Question 9

what is total internal refraction?

Answer 9

when the light travels from a denser medium (water) to less dense medium (air) at an angle of more than critical angle, total internal refraction occurs.