Class 10 Exam > Class 10 Questions > a beam of light incident parallel to the prin...
Start Learning for Free
a beam of light incident parallel to the principal axis of a concave lens appears to diverge from a point 20cm behind the lens. after refraction through the lens calculate the power of the lens
?
Most Upvoted Answer
a beam of light incident parallel to the principal axis of a concave l...
Community Answer
a beam of light incident parallel to the principal axis of a concave l...
Calculation of Power of the Concave Lens:
1. Given Data:
- Distance of the point from which the light appears to diverge = 20 cm
- Focal length of the lens = f cm
2. Using Lens Formula:
- 1/f = 1/v - 1/u
- Since the incident light is parallel to the principal axis, u = ∞
- v = -20 cm (negative sign indicates that the image is virtual)
- 1/f = -1/20
- f = -20 cm
3. Calculation of Power:
- Power of a lens is given by the formula P = 1/f
- Substituting the value of f, we get P = 1/-20 = -1/20 diopters
4. Interpretation:
- The negative sign indicates that the lens is a concave lens.
- The power of the concave lens is 1/20 diopters.
Therefore, the power of the concave lens through which the light beam diverges from a point 20 cm behind the lens is calculated to be -1/20 diopters. This indicates that the concave lens has a focal length of -20 cm and is diverging in nature.
1. Given Data:
- Distance of the point from which the light appears to diverge = 20 cm
- Focal length of the lens = f cm
2. Using Lens Formula:
- 1/f = 1/v - 1/u
- Since the incident light is parallel to the principal axis, u = ∞
- v = -20 cm (negative sign indicates that the image is virtual)
- 1/f = -1/20
- f = -20 cm
3. Calculation of Power:
- Power of a lens is given by the formula P = 1/f
- Substituting the value of f, we get P = 1/-20 = -1/20 diopters
4. Interpretation:
- The negative sign indicates that the lens is a concave lens.
- The power of the concave lens is 1/20 diopters.
Therefore, the power of the concave lens through which the light beam diverges from a point 20 cm behind the lens is calculated to be -1/20 diopters. This indicates that the concave lens has a focal length of -20 cm and is diverging in nature.
Attention Class 10 Students!
To make sure you are not studying endlessly, EduRev has designed Class 10 study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Class 10.
|
Explore Courses for Class 10 exam
|
|
Similar Class 10 Doubts
Top Courses for Class 10View all
a beam of light incident parallel to the principal axis of a concave lens appears to diverge from a point 20cm behind the lens. after refraction through the lens calculate the power of the lens Related: Assignment- Ray Optics, Class 10, Science?
Question Description
a beam of light incident parallel to the principal axis of a concave lens appears to diverge from a point 20cm behind the lens. after refraction through the lens calculate the power of the lens Related: Assignment- Ray Optics, Class 10, Science? 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 beam of light incident parallel to the principal axis of a concave lens appears to diverge from a point 20cm behind the lens. after refraction through the lens calculate the power of the lens Related: Assignment- Ray Optics, Class 10, Science? covers all topics & solutions for Class 10 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for a beam of light incident parallel to the principal axis of a concave lens appears to diverge from a point 20cm behind the lens. after refraction through the lens calculate the power of the lens Related: Assignment- Ray Optics, Class 10, Science?.
a beam of light incident parallel to the principal axis of a concave lens appears to diverge from a point 20cm behind the lens. after refraction through the lens calculate the power of the lens Related: Assignment- Ray Optics, Class 10, Science? 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 beam of light incident parallel to the principal axis of a concave lens appears to diverge from a point 20cm behind the lens. after refraction through the lens calculate the power of the lens Related: Assignment- Ray Optics, Class 10, Science? covers all topics & solutions for Class 10 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for a beam of light incident parallel to the principal axis of a concave lens appears to diverge from a point 20cm behind the lens. after refraction through the lens calculate the power of the lens Related: Assignment- Ray Optics, Class 10, Science?.
Solutions for a beam of light incident parallel to the principal axis of a concave lens appears to diverge from a point 20cm behind the lens. after refraction through the lens calculate the power of the lens Related: Assignment- Ray Optics, Class 10, Science? in English & in Hindi are available as part of our courses for Class 10.
Download more important topics, notes, lectures and mock test series for Class 10 Exam by signing up for free.
Here you can find the meaning of a beam of light incident parallel to the principal axis of a concave lens appears to diverge from a point 20cm behind the lens. after refraction through the lens calculate the power of the lens Related: Assignment- Ray Optics, Class 10, Science? defined & explained in the simplest way possible. Besides giving the explanation of
a beam of light incident parallel to the principal axis of a concave lens appears to diverge from a point 20cm behind the lens. after refraction through the lens calculate the power of the lens Related: Assignment- Ray Optics, Class 10, Science?, a detailed solution for a beam of light incident parallel to the principal axis of a concave lens appears to diverge from a point 20cm behind the lens. after refraction through the lens calculate the power of the lens Related: Assignment- Ray Optics, Class 10, Science? has been provided alongside types of a beam of light incident parallel to the principal axis of a concave lens appears to diverge from a point 20cm behind the lens. after refraction through the lens calculate the power of the lens Related: Assignment- Ray Optics, Class 10, Science? theory, EduRev gives you an
ample number of questions to practice a beam of light incident parallel to the principal axis of a concave lens appears to diverge from a point 20cm behind the lens. after refraction through the lens calculate the power of the lens Related: Assignment- Ray Optics, Class 10, Science? tests, examples and also practice Class 10 tests.
|
|
Explore Courses for Class 10 exam
|
|
Suggested Free Tests
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup