Physics
The diagram below shows the ray OP travelling through an equilateral prism of a certain material.
(a) Calculate the value of i2, if the angle of deviation is 43°.
(b) What is the ray QS called?
Refraction Plane Surfaces
ICSE 2023
63 Likes
Answer
(a) Given,
angle of prism (A) = 60° for an equilateral prism.
angle of incidence (i1) = 65°
Angle of deviation (δ) = 43°
𝑒 = i2 = ?
From formula,
Angle of deviation (δ) = 𝑖 + 𝑒 − 𝐴
Substituting the values we get:
43 = 65 + i2 - 60°
i2 = 43 - 5 = 38°
Hence, i2 = 38°
(b) Emergent ray
Answered By
37 Likes
Related Questions
Thermal capacities of substances A and B are same. If mass of A is more than mass of B then:
(a) Which substance will have more specific heat capacity?
(b) Which substance will show greater rise in temperature if the same amount of heat is supplied to both?
How is the radioactivity of a radio isotope affected if it undergoes a chemical change? Give a reason for your answer.
Copy the diagram given below and complete the path of the light ray PQ, as it emerges out of the prism by marking necessary angles. The critical angle of glass is 42°.
The diagram below shows two parallel rays A (Orange) & B (Blue) incident from air, on air-glass boundary.
(a) Copy and complete the path of the rays A and B.
(b) How do the speeds of these rays differ in glass?
(c) Are the two refracted rays in glass parallel? Give a reason.
