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A glass prism has refractive index 1.5 and the refracting angle 90° If a ray falls on it at an angle of incidence of 30°, then the angle of emergence will be
- a)60°
- b)45°
- c)30°
- d)the ray will not emerge at all
Correct answer is option 'D'. Can you explain this answer?
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Verified Answer
A glass prism has refractive index 1.5 and the refracting angle 90°...
The refractive index is n=1.5 (you have written 105, but I think so its 1.5.Let me know if I wrong.Either way you can figure if it is 105)
critical angle is ic=sin-1.667=41.80
If the incident angle is greater than this then there is total internal reflection.
Given , angle of incidence is 300
sin(i)/sin(r)=1/1.5
then sin(r)=1.5*0.5=.75
angle of refraction(r)=48.590
Most Upvoted Answer
A glass prism has refractive index 1.5 and the refracting angle 90°...
We have, δ=(μ−1)A
=(1.5−1)×90
=0.5×90
=45
Now, δ=(i1+i2)−A
∴i2=δ−i1+A
=45−30+90
=105
Angle of emergence has inclination with second surface
=90−105
=−15
This shows that light ray will not emerge out of the prism.
=(1.5−1)×90
=0.5×90
=45
Now, δ=(i1+i2)−A
∴i2=δ−i1+A
=45−30+90
=105
Angle of emergence has inclination with second surface
=90−105
=−15
This shows that light ray will not emerge out of the prism.
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Community Answer
A glass prism has refractive index 1.5 and the refracting angle 90°...
The refractive index of a material is defined as the ratio of the speed of light in vacuum to the speed of light in that material. In this case, the refractive index of the glass prism is given as 1.5.
However, the refracting angle cannot be 90 degrees because a 90-degree angle would result in light passing through the prism parallel to the base, which would not cause any deviation. The refracting angle of a prism is typically less than 90 degrees to ensure that the light rays passing through the prism are bent or deviated.
If the refracting angle is less than 90 degrees, the light entering the prism will undergo refraction at both the entrance and exit faces of the prism and will be deviated from its original path. The exact amount of deviation depends on the angle of incidence and the refractive index of the prism.
However, the refracting angle cannot be 90 degrees because a 90-degree angle would result in light passing through the prism parallel to the base, which would not cause any deviation. The refracting angle of a prism is typically less than 90 degrees to ensure that the light rays passing through the prism are bent or deviated.
If the refracting angle is less than 90 degrees, the light entering the prism will undergo refraction at both the entrance and exit faces of the prism and will be deviated from its original path. The exact amount of deviation depends on the angle of incidence and the refractive index of the prism.
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A glass prism has refractive index 1.5 and the refracting angle 90° If a ray falls on it at an angle of incidence of 30°, then the angle of emergence will bea)60°b)45°c)30°d)the ray will not emerge at allCorrect answer is option 'D'. Can you explain this answer?
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A glass prism has refractive index 1.5 and the refracting angle 90° If a ray falls on it at an angle of incidence of 30°, then the angle of emergence will bea)60°b)45°c)30°d)the ray will not emerge at allCorrect answer is option 'D'. Can you explain this answer? for Class 10 2024 is part of Class 10 preparation. The Question and answers have been prepared according to the Class 10 exam syllabus. Information about A glass prism has refractive index 1.5 and the refracting angle 90° If a ray falls on it at an angle of incidence of 30°, then the angle of emergence will bea)60°b)45°c)30°d)the ray will not emerge at allCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Class 10 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A glass prism has refractive index 1.5 and the refracting angle 90° If a ray falls on it at an angle of incidence of 30°, then the angle of emergence will bea)60°b)45°c)30°d)the ray will not emerge at allCorrect answer is option 'D'. Can you explain this answer?.
A glass prism has refractive index 1.5 and the refracting angle 90° If a ray falls on it at an angle of incidence of 30°, then the angle of emergence will bea)60°b)45°c)30°d)the ray will not emerge at allCorrect answer is option 'D'. Can you explain this answer? for Class 10 2024 is part of Class 10 preparation. The Question and answers have been prepared according to the Class 10 exam syllabus. Information about A glass prism has refractive index 1.5 and the refracting angle 90° If a ray falls on it at an angle of incidence of 30°, then the angle of emergence will bea)60°b)45°c)30°d)the ray will not emerge at allCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Class 10 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A glass prism has refractive index 1.5 and the refracting angle 90° If a ray falls on it at an angle of incidence of 30°, then the angle of emergence will bea)60°b)45°c)30°d)the ray will not emerge at allCorrect answer is option 'D'. Can you explain this answer?.
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A glass prism has refractive index 1.5 and the refracting angle 90° If a ray falls on it at an angle of incidence of 30°, then the angle of emergence will bea)60°b)45°c)30°d)the ray will not emerge at allCorrect answer is option 'D'. Can you explain this answer?, a detailed solution for A glass prism has refractive index 1.5 and the refracting angle 90° If a ray falls on it at an angle of incidence of 30°, then the angle of emergence will bea)60°b)45°c)30°d)the ray will not emerge at allCorrect answer is option 'D'. Can you explain this answer? has been provided alongside types of A glass prism has refractive index 1.5 and the refracting angle 90° If a ray falls on it at an angle of incidence of 30°, then the angle of emergence will bea)60°b)45°c)30°d)the ray will not emerge at allCorrect answer is option 'D'. Can you explain this answer? theory, EduRev gives you an
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