Question: A lens produces a magnification of 3. If the object height is 2 cm, what is the image height?
Options:
4 cm
6 cm
3 cm
2 cm
Correct Answer: 4 cm
Solution:
Magnification (m) = h\'/h, thus h\' = m * h = 3 * 2 = 6 cm.
A lens produces a magnification of 3. If the object height is 2 cm, what is the
Practice Questions
Q1
A lens produces a magnification of 3. If the object height is 2 cm, what is the image height?
4 cm
6 cm
3 cm
2 cm
Questions & Step-by-Step Solutions
A lens produces a magnification of 3. If the object height is 2 cm, what is the image height?
Step 1: Understand that magnification (m) is the ratio of the image height (h') to the object height (h).
Step 2: Write the formula for magnification: m = h' / h.
Step 3: Rearrange the formula to find the image height: h' = m * h.
Step 4: Substitute the given values into the formula: m = 3 and h = 2 cm.
Step 5: Calculate the image height: h' = 3 * 2 = 6 cm.
Magnification – Magnification is the ratio of the height of the image (h') to the height of the object (h), indicating how much larger or smaller the image is compared to the object.
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