Advertisements
Advertisements
Question
Draw the diagram of refraction of light in the glass slab
Advertisements
Solution
APPEARS IN
RELATED QUESTIONS
Explain how spectrum is formed.
Define refraction and state the laws of refraction.
Select from the following the best experimental setup for tracing the path of a ray of light passing through a rectangular glass slab.
(a) P
(b) Q
(c) R
(d) S
Draw a ray diagram to show the refraction of light through a glass slab and mark angle of refraction and the lateral shift suffered by the ray of light while passing through the slab.
Draw a ray diagram to show the refraction of a monochromatic ray through a prism when it suffers minimum deviation
State the dependence of angle of deviation On the refractive index of the material of the prism.
The following diagram shows a 60°, 30°, 90° glass prism of critical angle 42°, Copy the diagram and complete the path of incident ray AB emerging out of the prism marking the angle of incidence on each surface.
Observe the following figure and answer the questions given under it:
1) How many times does refraction take place in the above figure?
2) What happens to the ray of light when it passes from air to glass?
3) What happens to the ray of light when it passes from glass to air?
4) What are the rays AB and CD in the figure called?
5) Define refraction.
A ray of light passes from glass into air. The angle of refraction will be:
(a) equal to the angle of incidence
(b) greater than the angle of incidence
(c) smaller than the angle of incidence
(d) 45°
Draw diagrams to show the refraction of light from glass to air. In diagram, label the incident ray, refracted ray, the angle of incidence (i) and the angle of refraction (r).
When a ray of light from air enters a denser medium, it ______.
How does the angle of deviation produced by a prism change with increase in the angle of incidence. Draw a curve showing the variation in the angle of deviation with the angle of incidence at a prism surface.
How does the angle of minimum deviation produces by a prism change with increase in :
the refracting angle of prism?
How does the speed of light change when it passes from glass to water?
In fig 4.18, name the ray which represents the correct path of light while emerging out through a glass block.
An object is viewed through a glass prism with its vertex pointing upwards. It appears to be displaced upward. Explain the reason.
After tracing the path of rays of light through a glass slab for three different angles of incidence, a student measured the corresponding values angle of refraction r and angle of emergence e and recorded them in the table given below:
|
S. No. |
∠i |
∠i |
∠e |
|
I |
30° |
20° |
31° |
|
II |
40° |
25° |
40° |
|
III |
50° |
31° |
49° |
The correct observations are:
(A) I and II
(B) II and III
(C) I and III
(D) I, II and III
Observe the figure and write accurate conclusion regarding refraction of light.
What is the correct reason for blinking / flickering of stars? Explain it.
a) The blasts in the stars.
b) Absorption of star light by the atmosphere.
c) Motion of the stars.
d) Changing refractive index of gases in the atmosphere.
(i) What is the relation between the refractive index of water with respect to air `("_aμ_\text(w))` and the refractive index of air with respect to water `("_\text(w)μ_ a)` .
(ii) If the refractive index of water with respect to air `("_aμ_\text(w))` is`5/3`. Calculate the refractive index of air with respect to water `("_\text(w)μ_ a)` .
A ray of light passes from air to water. In fig. 39, which of the ray A, B, C and D is the correct refracted ray?
Make the correct for each of the following :
With reference to the fig, the refractive index of the glass block is
Light of a single colour is passed through a liquid having a piece of glass suspended in it. On changing the temperature of liquid, at a particular temperature, the glass piece is not seen.
Why is the light of a single colour used ?
A ray of light passes from water to air. How does the speed of light change?
Does the depth of a tank of water appear to change or remain the same when viewed normally from above?
During sunset and sunrise, the sun is seen when it is slightly below the horizon. Give reason.
Define the term refractive index of a medium in terms of velocity of light.
Name two instruments of the total refracting prism in which is used.
What do you understand by the deviation produced by a prism?
The refractive index of air with respect to glass is defined: as gµa = sin i/sin r
Write down a similar expression for aµg in terms of angle i and r.
In the diagram below, PQ is a ray of light incident on a rectangular glass block.
Copy the diagram and complete the path of the ray of light through the glass block. In your diagram, mark the angle of incidence by letter ‘i’ and the angle of emergence by the letter ‘e’.
Draw ray of light bending towards the normal while passing from air to glass. Label your diagrams.
Complete the ray diagram showing its emergence into the air after passing through the prism.
Light passes through a rectangular glass slab and through a triangular glass prism. In what way does the direction of the two emergent beams differ and why?
A ray of monochromatic light is incident from the air on a glass slab:
(i) Draw a labelled ray diagram showing the change in the path of the ray till it emerges from the glass slab.
(ii) Name the two rays that are parallel to each other.
(iii) Mark the lateral displacement in your diagram.
Observe the figure and name the ray AB, ray CD, ray GH.
