IIT JAM Exam  >  IIT JAM Questions  >  A collimated beam of laser light of wavelengt... Start Learning for Free
A collimated beam of laser light of wavelength 514 nm is normally incident on a smooth glass slab placed in air. Given the refractive indices of glass and air are 1.47 and 1.0, respectively, the percentage of light intensity reflected back is (A) 0 (B) 4.0 (C) 3.6 (D) 4.2?
Verified Answer
A collimated beam of laser light of wavelength 514 nm is normally inci...
This question is part of UPSC exam. View all IIT JAM courses
Most Upvoted Answer
A collimated beam of laser light of wavelength 514 nm is normally inci...
Calculation of the percentage of light intensity reflected back


Given:

- Wavelength of laser light, λ = 514 nm
- Refractive index of glass, n1 = 1.47
- Refractive index of air, n2 = 1.0

Formula:

- The reflection coefficient, R = ((n1 - n2)/(n1 + n2))^2

Calculation:

- Substituting the given values into the formula, we have
R = ((1.47 - 1.0)/(1.47 + 1.0))^2
R = (0.47/2.47)^2
R = (0.190)^2
R ≈ 0.0361

Percentage of light intensity reflected back:

- The percentage of light intensity reflected back is given by the reflection coefficient multiplied by 100.
- Percentage of light intensity reflected back = R × 100
- Percentage of light intensity reflected back ≈ 0.0361 × 100
- Percentage of light intensity reflected back ≈ 3.61%

Final Answer:

The percentage of light intensity reflected back is approximately 3.6%. Therefore, the correct option is (C) 3.6.
Explore Courses for IIT JAM exam

Similar IIT JAM Doubts

A collimated beam of laser light of wavelength 514 nm is normally incident on a smooth glass slab placed in air. Given the refractive indices of glass and air are 1.47 and 1.0, respectively, the percentage of light intensity reflected back is (A) 0 (B) 4.0 (C) 3.6 (D) 4.2?
Question Description
A collimated beam of laser light of wavelength 514 nm is normally incident on a smooth glass slab placed in air. Given the refractive indices of glass and air are 1.47 and 1.0, respectively, the percentage of light intensity reflected back is (A) 0 (B) 4.0 (C) 3.6 (D) 4.2? for IIT JAM 2024 is part of IIT JAM preparation. The Question and answers have been prepared according to the IIT JAM exam syllabus. Information about A collimated beam of laser light of wavelength 514 nm is normally incident on a smooth glass slab placed in air. Given the refractive indices of glass and air are 1.47 and 1.0, respectively, the percentage of light intensity reflected back is (A) 0 (B) 4.0 (C) 3.6 (D) 4.2? covers all topics & solutions for IIT JAM 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A collimated beam of laser light of wavelength 514 nm is normally incident on a smooth glass slab placed in air. Given the refractive indices of glass and air are 1.47 and 1.0, respectively, the percentage of light intensity reflected back is (A) 0 (B) 4.0 (C) 3.6 (D) 4.2?.
Solutions for A collimated beam of laser light of wavelength 514 nm is normally incident on a smooth glass slab placed in air. Given the refractive indices of glass and air are 1.47 and 1.0, respectively, the percentage of light intensity reflected back is (A) 0 (B) 4.0 (C) 3.6 (D) 4.2? in English & in Hindi are available as part of our courses for IIT JAM. Download more important topics, notes, lectures and mock test series for IIT JAM Exam by signing up for free.
Here you can find the meaning of A collimated beam of laser light of wavelength 514 nm is normally incident on a smooth glass slab placed in air. Given the refractive indices of glass and air are 1.47 and 1.0, respectively, the percentage of light intensity reflected back is (A) 0 (B) 4.0 (C) 3.6 (D) 4.2? defined & explained in the simplest way possible. Besides giving the explanation of A collimated beam of laser light of wavelength 514 nm is normally incident on a smooth glass slab placed in air. Given the refractive indices of glass and air are 1.47 and 1.0, respectively, the percentage of light intensity reflected back is (A) 0 (B) 4.0 (C) 3.6 (D) 4.2?, a detailed solution for A collimated beam of laser light of wavelength 514 nm is normally incident on a smooth glass slab placed in air. Given the refractive indices of glass and air are 1.47 and 1.0, respectively, the percentage of light intensity reflected back is (A) 0 (B) 4.0 (C) 3.6 (D) 4.2? has been provided alongside types of A collimated beam of laser light of wavelength 514 nm is normally incident on a smooth glass slab placed in air. Given the refractive indices of glass and air are 1.47 and 1.0, respectively, the percentage of light intensity reflected back is (A) 0 (B) 4.0 (C) 3.6 (D) 4.2? theory, EduRev gives you an ample number of questions to practice A collimated beam of laser light of wavelength 514 nm is normally incident on a smooth glass slab placed in air. Given the refractive indices of glass and air are 1.47 and 1.0, respectively, the percentage of light intensity reflected back is (A) 0 (B) 4.0 (C) 3.6 (D) 4.2? tests, examples and also practice IIT JAM tests.
Explore Courses for IIT JAM exam
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev