Advertisements
Advertisements
Question
Express the refractive index μ of a medium in terms of the angle of incidence i in air and the angle of refraction r in a denser medium.
Solution
If light travels from air into another denser medium, the refractive index ‘μ’ of the medium.
`μ="Sine of the angle of incidence in air"/"Sine of the angle of refraction in the denser medium"`
`μ=sin i/sin r`
APPEARS IN
RELATED QUESTIONS
Plot a graph between
Sine of angle of incidence versus sine of angle of refraction,
Name the principle on the basis of which optical fibres work.
Write down the relationship between the critical angle and the refractive index of the medium.
A ray of light incident at an angle of incidence ‘i’ passes through an equilateral glass prism such that the refracted ray inside the prism is parallel to its base and emerges from the prism at an angle of emergence ‘e’.
How is the angle of emergence ‘e’ related to the angle of incidence ‘i’?
Draw a diagram, properly labelled, to illustrate the use of a total reflecting prism (a right-angled isosceles prism) to turn a ray of light through 180°. Name an instrument in which this device is used.
A ray of light passes through a right-angled prism as shown in the figure. State the angles of incidence at the faces AC and BC.
Which of the following is not involved in formation of a rainbow?
For the same angle of incidence, the angle of refraction in four media A, B, C and D are 25°, 30°, 35° and 40° respectively. The speed of light is least in medium ______.
The twinkling effect of star light is due to ______.
Small air bubbles rising up a fish tank appear silvery when viewed from some particular angle is due to the ______.
