Class 12 Exam > Class 12 Questions > Directions : In the following questions, A s...
Start Learning for Free
Directions : In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.
Assertion (A): A convex lens of focal length 30 cm can’t be used as a simple microscope in normal setting.
Reason (R): For normal setting, the angular magnification of simple microscope is M = D/f.
- a)Both A and R are true and R is the correct explanation of A
- b)Both A and R are true but R is NOT the correct explanation of A
- c)A is true but R is false
- d)A is false and R is True
Correct answer is option 'B'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Verified Answer
Directions : In the following questions, A statement of Assertion (A)...
For normal adjustment, a 30 cm lens final image cannot form image at the near point (25 cm from the eye). So the statement is true.
View all questions of this test
Most Upvoted Answer
Directions : In the following questions, A statement of Assertion (A)...
Assertion (A): A convex lens of focal length 30 cm can't be used as a simple microscope in normal setting.
Reason (R): For normal setting, the angular magnification of a simple microscope is M = D/f.
Explanation:
To understand why option B is the correct answer, let's analyze the assertion and reason given in the question.
Convex Lens as a Simple Microscope:
A simple microscope consists of a convex lens used to magnify the image of an object. The angular magnification (M) of a simple microscope is given by the formula M = D/f, where D is the least distance of distinct vision and f is the focal length of the lens.
Assertion (A): A convex lens of focal length 30 cm can't be used as a simple microscope in normal setting.
This means that a convex lens with a focal length of 30 cm is not suitable for use as a simple microscope. Let's analyze why this is the case.
Reason (R): For normal setting, the angular magnification of a simple microscope is M = D/f.
This reason states the formula for calculating the angular magnification of a simple microscope. It implies that the angular magnification depends on the focal length of the lens.
Analysis:
To determine if the given reason is the correct explanation of the assertion, we need to consider the relationship between the focal length of the lens and the suitability of the lens as a simple microscope.
In a simple microscope, a larger angular magnification is desired to magnify the image of the object. The angular magnification depends on the ratio of D (least distance of distinct vision) to f (focal length of the lens).
When the focal length of the lens is larger (in this case, 30 cm), the denominator in the formula for angular magnification becomes larger. This results in a smaller angular magnification, making the lens less suitable for use as a simple microscope.
Conclusion:
From the analysis, it can be concluded that the assertion (A) is true, and the reason (R) is the correct explanation of the assertion. Therefore, option B is the correct answer.
Reason (R): For normal setting, the angular magnification of a simple microscope is M = D/f.
Explanation:
To understand why option B is the correct answer, let's analyze the assertion and reason given in the question.
Convex Lens as a Simple Microscope:
A simple microscope consists of a convex lens used to magnify the image of an object. The angular magnification (M) of a simple microscope is given by the formula M = D/f, where D is the least distance of distinct vision and f is the focal length of the lens.
Assertion (A): A convex lens of focal length 30 cm can't be used as a simple microscope in normal setting.
This means that a convex lens with a focal length of 30 cm is not suitable for use as a simple microscope. Let's analyze why this is the case.
Reason (R): For normal setting, the angular magnification of a simple microscope is M = D/f.
This reason states the formula for calculating the angular magnification of a simple microscope. It implies that the angular magnification depends on the focal length of the lens.
Analysis:
To determine if the given reason is the correct explanation of the assertion, we need to consider the relationship between the focal length of the lens and the suitability of the lens as a simple microscope.
In a simple microscope, a larger angular magnification is desired to magnify the image of the object. The angular magnification depends on the ratio of D (least distance of distinct vision) to f (focal length of the lens).
When the focal length of the lens is larger (in this case, 30 cm), the denominator in the formula for angular magnification becomes larger. This results in a smaller angular magnification, making the lens less suitable for use as a simple microscope.
Conclusion:
From the analysis, it can be concluded that the assertion (A) is true, and the reason (R) is the correct explanation of the assertion. Therefore, option B is the correct answer.
|
Explore Courses for Class 12 exam
|
|
Similar Class 12 Doubts
Directions : In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): A convex lens of focal length 30 cm can’t be used as a simple microscope in normal setting.Reason (R): For normal setting, the angular magnification of simple microscope is M = D/f.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is TrueCorrect answer is option 'B'. Can you explain this answer?
Question Description
Directions : In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): A convex lens of focal length 30 cm can’t be used as a simple microscope in normal setting.Reason (R): For normal setting, the angular magnification of simple microscope is M = D/f.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is TrueCorrect answer is option 'B'. Can you explain this answer? for Class 12 2024 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about Directions : In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): A convex lens of focal length 30 cm can’t be used as a simple microscope in normal setting.Reason (R): For normal setting, the angular magnification of simple microscope is M = D/f.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is TrueCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 12 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Directions : In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): A convex lens of focal length 30 cm can’t be used as a simple microscope in normal setting.Reason (R): For normal setting, the angular magnification of simple microscope is M = D/f.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is TrueCorrect answer is option 'B'. Can you explain this answer?.
Directions : In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): A convex lens of focal length 30 cm can’t be used as a simple microscope in normal setting.Reason (R): For normal setting, the angular magnification of simple microscope is M = D/f.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is TrueCorrect answer is option 'B'. Can you explain this answer? for Class 12 2024 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about Directions : In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): A convex lens of focal length 30 cm can’t be used as a simple microscope in normal setting.Reason (R): For normal setting, the angular magnification of simple microscope is M = D/f.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is TrueCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 12 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Directions : In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): A convex lens of focal length 30 cm can’t be used as a simple microscope in normal setting.Reason (R): For normal setting, the angular magnification of simple microscope is M = D/f.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is TrueCorrect answer is option 'B'. Can you explain this answer?.
Solutions for Directions : In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): A convex lens of focal length 30 cm can’t be used as a simple microscope in normal setting.Reason (R): For normal setting, the angular magnification of simple microscope is M = D/f.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is TrueCorrect answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 12.
Download more important topics, notes, lectures and mock test series for Class 12 Exam by signing up for free.
Here you can find the meaning of Directions : In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): A convex lens of focal length 30 cm can’t be used as a simple microscope in normal setting.Reason (R): For normal setting, the angular magnification of simple microscope is M = D/f.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is TrueCorrect answer is option 'B'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
Directions : In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): A convex lens of focal length 30 cm can’t be used as a simple microscope in normal setting.Reason (R): For normal setting, the angular magnification of simple microscope is M = D/f.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is TrueCorrect answer is option 'B'. Can you explain this answer?, a detailed solution for Directions : In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): A convex lens of focal length 30 cm can’t be used as a simple microscope in normal setting.Reason (R): For normal setting, the angular magnification of simple microscope is M = D/f.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is TrueCorrect answer is option 'B'. Can you explain this answer? has been provided alongside types of Directions : In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): A convex lens of focal length 30 cm can’t be used as a simple microscope in normal setting.Reason (R): For normal setting, the angular magnification of simple microscope is M = D/f.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is TrueCorrect answer is option 'B'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Directions : In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): A convex lens of focal length 30 cm can’t be used as a simple microscope in normal setting.Reason (R): For normal setting, the angular magnification of simple microscope is M = D/f.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is TrueCorrect answer is option 'B'. Can you explain this answer? tests, examples and also practice Class 12 tests.
|
|
Explore Courses for Class 12 exam
|
|
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