Advertisements
Advertisements
प्रश्न
Trace a ray of light incident at 30° on a surface if travelling from air to glass. What is the angle of refraction in this case? (R.I. for glass = 3/2).
Advertisements
उत्तर
aμg = `sin"i"/sin"r"`
∴ `3/2=(sin30°)/sin"r"`
∴ Sin r = `2/3xxsin30°`
But sin 30° = `1/2`
∴ sin r = `2/3xx1/2`
= `1/3`
∴ sin r = 0.3334
∴ sin r = 19°30′.
Angle of refraction for air to glass = 19°30′.
संबंधित प्रश्न
The speed of light in glass is 2 × 105 km/s. What is the refractive index of glass?
Fill in the blanks to complete the following sentence
The refractive index of glass with respect to air is 3/2. The refractive index of air with respect to glass will be ……………….
A student has traced the path of a ray of light through a glass slab as follows. If you are asked to label 1, 2, 3 and 4, the correct sequencing of labeling ∠i, ∠e, ∠r and lateral displacement respectively is
(a) 2, 1, 3, 4
(b) 1, 2, 3, 4
(c) 1, 3, 2, 4
(d) 1, 3, 4, 2
Draw a diagram to show the splitting of white light into its constituent colours.
A fish swimming in a pond seems nearer than it really is. Explain.
Why does the sun appear bigger during sunset or sunrise?
How will you verify the laws of refraction or how the refractive index of glass is determined in the laboratory?
The diagram shows the path of a ray of light through a rectangular glass block placed in a liquid of uniform density.
What should be the rate of the speed of light through the liquid to the speed through the glass so that there is no refraction of light at the boundaries of the glass block when the system is illuminated by the light of one colour?
The velocity of light in diamond is 121000 kms-1. What is its refractive index?
Observe the figure and name the ray AB, ray CD, ray GH.
