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Two plane mirrors are inclined at an angle θ . It is found that a ray incident on one mirror at any angles is rendered parallel to itself after reflection from both the mirrors. The value of θ is
- a)30o
- b)60o
- c)90o
- d)120o
Correct answer is option 'C'. Can you explain this answer?
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Most Upvoted Answer
Two plane mirrors are inclined at an angle θ . It is found that ...
Of 60 degrees. A beam of light is incident on one of the mirrors as shown in the figure below.
What is the angle of reflection of the beam after it is reflected twice?
Solution:
First, we need to find the angle of incidence of the beam on the first mirror. Since the angle of incidence is equal to the angle of reflection, the angle of incidence is also 60 degrees.
Now, we can use the law of reflection to find the angle of reflection of the beam after it is reflected from the first mirror. The law of reflection states that the angle of incidence is equal to the angle of reflection. Therefore, the angle of reflection is also 60 degrees.
Next, we need to find the angle of incidence of the beam on the second mirror. The beam of light is now coming from the left side and hitting the mirror at an angle of 60 degrees. We can use the fact that the sum of the angles in a triangle is 180 degrees to find the angle between the first mirror and the second mirror. Since the two mirrors are inclined at an angle of 60 degrees, the angle between them is 180 - 60 - 60 = 60 degrees.
Using the law of reflection again, we can find the angle of reflection of the beam after it is reflected from the second mirror. The angle of incidence is 60 degrees (the angle between the beam and the second mirror) and the angle of reflection is also 60 degrees (the angle between the reflected beam and the second mirror).
Therefore, the angle of reflection of the beam after it is reflected twice is 60 degrees.
What is the angle of reflection of the beam after it is reflected twice?
Solution:
First, we need to find the angle of incidence of the beam on the first mirror. Since the angle of incidence is equal to the angle of reflection, the angle of incidence is also 60 degrees.
Now, we can use the law of reflection to find the angle of reflection of the beam after it is reflected from the first mirror. The law of reflection states that the angle of incidence is equal to the angle of reflection. Therefore, the angle of reflection is also 60 degrees.
Next, we need to find the angle of incidence of the beam on the second mirror. The beam of light is now coming from the left side and hitting the mirror at an angle of 60 degrees. We can use the fact that the sum of the angles in a triangle is 180 degrees to find the angle between the first mirror and the second mirror. Since the two mirrors are inclined at an angle of 60 degrees, the angle between them is 180 - 60 - 60 = 60 degrees.
Using the law of reflection again, we can find the angle of reflection of the beam after it is reflected from the second mirror. The angle of incidence is 60 degrees (the angle between the beam and the second mirror) and the angle of reflection is also 60 degrees (the angle between the reflected beam and the second mirror).
Therefore, the angle of reflection of the beam after it is reflected twice is 60 degrees.
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Community Answer
Two plane mirrors are inclined at an angle θ . It is found that ...
For others the two rays will not be parallel always.
in 90° walaa example just a general case and manipulate you will get it
in 90° walaa example just a general case and manipulate you will get it
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Two plane mirrors are inclined at an angle θ . It is found that a ray incident on one mirror at any angles is rendered parallel to itself after reflection from both the mirrors. The value of θ isa)30ob)60oc)90od)120oCorrect answer is option 'C'. Can you explain this answer?
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Two plane mirrors are inclined at an angle θ . It is found that a ray incident on one mirror at any angles is rendered parallel to itself after reflection from both the mirrors. The value of θ isa)30ob)60oc)90od)120oCorrect answer is option 'C'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about Two plane mirrors are inclined at an angle θ . It is found that a ray incident on one mirror at any angles is rendered parallel to itself after reflection from both the mirrors. The value of θ isa)30ob)60oc)90od)120oCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Two plane mirrors are inclined at an angle θ . It is found that a ray incident on one mirror at any angles is rendered parallel to itself after reflection from both the mirrors. The value of θ isa)30ob)60oc)90od)120oCorrect answer is option 'C'. Can you explain this answer?.
Two plane mirrors are inclined at an angle θ . It is found that a ray incident on one mirror at any angles is rendered parallel to itself after reflection from both the mirrors. The value of θ isa)30ob)60oc)90od)120oCorrect answer is option 'C'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about Two plane mirrors are inclined at an angle θ . It is found that a ray incident on one mirror at any angles is rendered parallel to itself after reflection from both the mirrors. The value of θ isa)30ob)60oc)90od)120oCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Two plane mirrors are inclined at an angle θ . It is found that a ray incident on one mirror at any angles is rendered parallel to itself after reflection from both the mirrors. The value of θ isa)30ob)60oc)90od)120oCorrect answer is option 'C'. Can you explain this answer?.
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Two plane mirrors are inclined at an angle θ . It is found that a ray incident on one mirror at any angles is rendered parallel to itself after reflection from both the mirrors. The value of θ isa)30ob)60oc)90od)120oCorrect answer is option 'C'. Can you explain this answer?, a detailed solution for Two plane mirrors are inclined at an angle θ . It is found that a ray incident on one mirror at any angles is rendered parallel to itself after reflection from both the mirrors. The value of θ isa)30ob)60oc)90od)120oCorrect answer is option 'C'. Can you explain this answer? has been provided alongside types of Two plane mirrors are inclined at an angle θ . It is found that a ray incident on one mirror at any angles is rendered parallel to itself after reflection from both the mirrors. The value of θ isa)30ob)60oc)90od)120oCorrect answer is option 'C'. Can you explain this answer? theory, EduRev gives you an
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