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Maharashtra State BoardSSC (English Medium) 10th Standard

Draw the Diagram of Refraction of Light in Glass Slab - Science and Technology 1

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Question

Draw the diagram of refraction of light in the glass slab

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Solution

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2017-2018 (March)

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Choose the correct alternative and rewrite the following sentence.

A ray of light strikes the glass slab at an angle of 50°. What is the angle of incidence?


After tracing the path of a ray of light passing through a rectangular glass slab for four different values of the angle of incidence, a student reported his observations in tabular form as given below:

S.No ∠ i ∠ r ∠ e
I 30° 19° 29°
II 40° 28° 40°
III 50° 36° 50°
IV 60° 40° 59°

The best observation is

(A) I

(B) II

(C) III

(D) IV


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A student very cautiously traces the path of a ray through a glass slab for different values of the angle of incidence (∠i). He then measures the corresponding values of the angle of refraction (∠r) and the angle of emergence (∠e) for every value of the angle of incidence. On analysing these measurements of angles, his conclusion would be

(A) ∠i > ∠r  > ∠e

(B) ∠i = ∠e  > ∠r

(C) ∠i < ∠r  < ∠e

(D) ∠i = ∠e  < ∠r


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In the adjacent diagram, AO is a ray of light incident on a rectangular glass slab.

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  3. Mark angles of emergence by the letter e. How are the angles i and e related?
  4. Which two rays are parallel to each other? Name them.
  5. Indicate in the diagram the lateral displacement between the emergent ray and the incident ray. State one factor that affects the lateral displacement.

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`("Take" sin 42° =2/3)` 


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(a) State the angles of incidence at the faces AC and BC.
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Four students showed the following traces of the path of a ray of light passing through a rectangular glass slab.

 

The trace most likely to be correct is that of student

(A) I

(B) II

(C) III

(D) IV


Rahim recorded the following sets of observations while tracing the path of a ray of light passing through a rectangular glass slab for different angles of incidence.

S. No.

Angle of incidence

Angle of refraction

Angle of emergence

I

45°

41°

45°

II

40°

38°

38°

III

45°

41°

40°

IV

41°

45°

41°

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(2) II 

(3) III 

(4) IV 


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What is lateral displacement?


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