Images from Spherical Mirrors MCQ Quiz - Objective Question with Answer for Images from Spherical Mirrors - Download Free PDF
Last updated on Apr 9, 2025
Latest Images from Spherical Mirrors MCQ Objective Questions
Images from Spherical Mirrors Question 1:
If an object is placed at a distance of 5 cm from the pole of a given concave mirror of focal length 2.5 cm, then the magnification produced is:
Answer (Detailed Solution Below)
Images from Spherical Mirrors Question 1 Detailed Solution
The correct answer is -1.
Key Points
-
Given:
- Object distance (u) = -5 cm (negative because it's to the left of the mirror)
- Focal length (f) = -2.5 cm (negative for a concave mirror)
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Using the mirror formula: 1/v + 1/u = 1/f
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Substituting the values: 1/v + 1/(-5) = 1/(-2.5)
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Solving for image distance (v):
- 1/v = 1/(-2.5) + 1/5
- 1/v = (-2 + 1)/5
- 1/v = -1/5
- v = -5 cm
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Calculating magnification (m): m = -v/u
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Substituting the values: m = -(-5)/(-5)
-
Therefore: m = -1
Top Images from Spherical Mirrors MCQ Objective Questions
Images from Spherical Mirrors Question 2:
If an object is placed at a distance of 5 cm from the pole of a given concave mirror of focal length 2.5 cm, then the magnification produced is:
Answer (Detailed Solution Below)
Images from Spherical Mirrors Question 2 Detailed Solution
The correct answer is -1.
Key Points
-
Given:
- Object distance (u) = -5 cm (negative because it's to the left of the mirror)
- Focal length (f) = -2.5 cm (negative for a concave mirror)
-
Using the mirror formula: 1/v + 1/u = 1/f
-
Substituting the values: 1/v + 1/(-5) = 1/(-2.5)
-
Solving for image distance (v):
- 1/v = 1/(-2.5) + 1/5
- 1/v = (-2 + 1)/5
- 1/v = -1/5
- v = -5 cm
-
Calculating magnification (m): m = -v/u
-
Substituting the values: m = -(-5)/(-5)
-
Therefore: m = -1