Advertisements
Advertisements
प्रश्न
Calculate the speed of light in a medium whose critical angle is 30° ?
उत्तर
Speed of light in the medium =`\text { Speed of light in air}/ text { Refractive index of the medium with respet to air}`
`=(3 xx 10^8 m/s)/(1/(sin30°)`
`= (3 xx 10^8 m/s)/2`
`=1.5 xx 10^8m/s`
APPEARS IN
संबंधित प्रश्न
Total internal reflection can take place only if ______.
Plot a graph between
Sine of angle of incidence versus sine of angle of refraction,
Plot a graph between
Angle of incidence versus angle of refraction.
The diagram shows a point source P inside a water container. Three rays A, B, and C starting from P are shown up to the water surface. Show in the diagram the path of these rays after striking the water surface. The critical angle for the water-air pair is 48°.
Answer the following question.
Why is prism binoculars preferred over traditional binoculars? Describe its working in brief.
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 ______.
For total internal reflection to take place, the angle of inddence i and the refractive index µ of the medium must satisfy the inequality ____________.
The entire light is reflected back into the denser medium is called ______.
A given ray of light suffers minimum deviation in an equilateral prism P. Additional prism Q and R of identical shape and of the same material as P are now added as shown in the figure. The ray will now suffer ______.
