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A student obtained a sharp image of a burning candle, placed at the farther end of a laboratory table, on a screen using a concave mirror. For getting a better value of focal length of the mirror, what should the student do?
- a)He should move the mirror as well as the screen towards the newly selected object.
- b)He should move the mirror away from the screen.
- c)He should move only the screen towards the newly selected object.
- d)He should move the mirror slightly towards the screen.
Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
A student obtained a sharp image of a burning candle, placed at the fa...
He should move the mirror towards the screen
Explanation- the burning candle is at finite distance but beyond 2f so the image will form between f and 2f. Now the object is at infinity so the image will form at focus and focus is near the mirror therefore in order to get the image of a distant object he should move the mirror towards the screen.
Explanation- the burning candle is at finite distance but beyond 2f so the image will form between f and 2f. Now the object is at infinity so the image will form at focus and focus is near the mirror therefore in order to get the image of a distant object he should move the mirror towards the screen.
Community Answer
A student obtained a sharp image of a burning candle, placed at the fa...
Explanation:
To obtain a sharp image of a distant object using a concave mirror, we need to place the object beyond the focal length of the mirror. Here, the student has obtained a sharp image of a burning candle, placed at the farther end of a laboratory table, on a screen using a concave mirror. Now, for getting a better value of focal length of the mirror, the student should move the mirror slightly towards the screen. Let's understand why.
Factors affecting focal length of a concave mirror:
The focal length of a concave mirror depends on the following factors:
1. Distance between the object and the mirror
2. Distance between the mirror and the screen
How to get a better value of focal length of the mirror?
To get a better value of focal length of the mirror, the student should make some adjustments in the position of the mirror and the screen. Let's discuss the options one by one:
a) He should move the mirror as well as the screen towards the newly selected object.
This option is incorrect because moving both the mirror and the screen towards the newly selected object will not change the distance between the object and the mirror. Hence, the focal length of the mirror will not change.
b) He should move the mirror away from the screen.
This option is incorrect because moving the mirror away from the screen will increase the distance between the mirror and the screen. Hence, the image will become blurred, and the focal length of the mirror will not change.
c) He should move only the screen towards the newly selected object.
This option is incorrect because moving only the screen towards the newly selected object will not change the distance between the object and the mirror. Hence, the focal length of the mirror will not change.
d) He should move the mirror slightly towards the screen.
This option is correct because moving the mirror slightly towards the screen will decrease the distance between the object and the mirror. Hence, the focal length of the mirror will decrease, and the image will become sharper.
Therefore, option D is the correct answer.
To obtain a sharp image of a distant object using a concave mirror, we need to place the object beyond the focal length of the mirror. Here, the student has obtained a sharp image of a burning candle, placed at the farther end of a laboratory table, on a screen using a concave mirror. Now, for getting a better value of focal length of the mirror, the student should move the mirror slightly towards the screen. Let's understand why.
Factors affecting focal length of a concave mirror:
The focal length of a concave mirror depends on the following factors:
1. Distance between the object and the mirror
2. Distance between the mirror and the screen
How to get a better value of focal length of the mirror?
To get a better value of focal length of the mirror, the student should make some adjustments in the position of the mirror and the screen. Let's discuss the options one by one:
a) He should move the mirror as well as the screen towards the newly selected object.
This option is incorrect because moving both the mirror and the screen towards the newly selected object will not change the distance between the object and the mirror. Hence, the focal length of the mirror will not change.
b) He should move the mirror away from the screen.
This option is incorrect because moving the mirror away from the screen will increase the distance between the mirror and the screen. Hence, the image will become blurred, and the focal length of the mirror will not change.
c) He should move only the screen towards the newly selected object.
This option is incorrect because moving only the screen towards the newly selected object will not change the distance between the object and the mirror. Hence, the focal length of the mirror will not change.
d) He should move the mirror slightly towards the screen.
This option is correct because moving the mirror slightly towards the screen will decrease the distance between the object and the mirror. Hence, the focal length of the mirror will decrease, and the image will become sharper.
Therefore, option D is the correct answer.
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A student obtained a sharp image of a burning candle, placed at the farther end of a laboratory table, on a screen using a concave mirror. For getting a better value of focal length of the mirror, what should the student do?a)He should move the mirror as well as the screen towards the newly selected object.b)He should move the mirror away from the screen.c)He should move only the screen towards the newly selected object.d)He should move the mirror slightly towards the screen.Correct answer is option 'D'. Can you explain this answer?
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A student obtained a sharp image of a burning candle, placed at the farther end of a laboratory table, on a screen using a concave mirror. For getting a better value of focal length of the mirror, what should the student do?a)He should move the mirror as well as the screen towards the newly selected object.b)He should move the mirror away from the screen.c)He should move only the screen towards the newly selected object.d)He should move the mirror slightly towards the screen.Correct 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 student obtained a sharp image of a burning candle, placed at the farther end of a laboratory table, on a screen using a concave mirror. For getting a better value of focal length of the mirror, what should the student do?a)He should move the mirror as well as the screen towards the newly selected object.b)He should move the mirror away from the screen.c)He should move only the screen towards the newly selected object.d)He should move the mirror slightly towards the screen.Correct 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 student obtained a sharp image of a burning candle, placed at the farther end of a laboratory table, on a screen using a concave mirror. For getting a better value of focal length of the mirror, what should the student do?a)He should move the mirror as well as the screen towards the newly selected object.b)He should move the mirror away from the screen.c)He should move only the screen towards the newly selected object.d)He should move the mirror slightly towards the screen.Correct answer is option 'D'. Can you explain this answer?.
A student obtained a sharp image of a burning candle, placed at the farther end of a laboratory table, on a screen using a concave mirror. For getting a better value of focal length of the mirror, what should the student do?a)He should move the mirror as well as the screen towards the newly selected object.b)He should move the mirror away from the screen.c)He should move only the screen towards the newly selected object.d)He should move the mirror slightly towards the screen.Correct 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 student obtained a sharp image of a burning candle, placed at the farther end of a laboratory table, on a screen using a concave mirror. For getting a better value of focal length of the mirror, what should the student do?a)He should move the mirror as well as the screen towards the newly selected object.b)He should move the mirror away from the screen.c)He should move only the screen towards the newly selected object.d)He should move the mirror slightly towards the screen.Correct 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 student obtained a sharp image of a burning candle, placed at the farther end of a laboratory table, on a screen using a concave mirror. For getting a better value of focal length of the mirror, what should the student do?a)He should move the mirror as well as the screen towards the newly selected object.b)He should move the mirror away from the screen.c)He should move only the screen towards the newly selected object.d)He should move the mirror slightly towards the screen.Correct answer is option 'D'. Can you explain this answer?.
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A student obtained a sharp image of a burning candle, placed at the farther end of a laboratory table, on a screen using a concave mirror. For getting a better value of focal length of the mirror, what should the student do?a)He should move the mirror as well as the screen towards the newly selected object.b)He should move the mirror away from the screen.c)He should move only the screen towards the newly selected object.d)He should move the mirror slightly towards the screen.Correct answer is option 'D'. Can you explain this answer?, a detailed solution for A student obtained a sharp image of a burning candle, placed at the farther end of a laboratory table, on a screen using a concave mirror. For getting a better value of focal length of the mirror, what should the student do?a)He should move the mirror as well as the screen towards the newly selected object.b)He should move the mirror away from the screen.c)He should move only the screen towards the newly selected object.d)He should move the mirror slightly towards the screen.Correct answer is option 'D'. Can you explain this answer? has been provided alongside types of A student obtained a sharp image of a burning candle, placed at the farther end of a laboratory table, on a screen using a concave mirror. For getting a better value of focal length of the mirror, what should the student do?a)He should move the mirror as well as the screen towards the newly selected object.b)He should move the mirror away from the screen.c)He should move only the screen towards the newly selected object.d)He should move the mirror slightly towards the screen.Correct answer is option 'D'. Can you explain this answer? theory, EduRev gives you an
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