Physics GK 19 – Light and Human Eye

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Which of the following is the mirror formula?

v + u =f

1/v + 1/u = 1/f

1/v + 1/u = f

None of the above

What do we call the phenomenon of light being deflected when travelling obliquely from one medium to another?

Refraction

Reflection

Dispersion

Convergence

Which of the following represents the Snell's law?

sine of angle of incidence/sine of angle of refraction = constant

cosine of angle of incidence/cosine of angle of refraction = constant

tangent of angle of incidence/tangent of angle of refraction = constant

angle of incidence - angle of refraction = constant

What is the refractive index of water?

1.01

1.33

1.78

What happens when light travels from a denser medium to a rarer medium?

it slows down and bends towards the normal

it speeds up and bends towards the normal

it slows down and bends away from the normal

it speeds up and bends away from the normal

Physics GK 19 - Light and Human Eye