What is the magnification produced by a concave lens if the object distance is 2

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Question: What is the magnification produced by a concave lens if the object distance is 20 cm and the image distance is -10 cm?

Options:

Correct Answer: 0.5

Solution:

Magnification m = -v/u = -(-10)/20 = 0.5.

What is the magnification produced by a concave lens if the object distance is 20 cm and the image distance is -10 cm?

What is the magnification produced by a concave lens if the object distance is 20 cm and the image distance is -10 cm?

Step 1: Identify the object distance (u). In this case, u = 20 cm.
Step 2: Identify the image distance (v). Here, v = -10 cm (the negative sign indicates that the image is virtual).
Step 3: Use the magnification formula: m = -v/u.
Step 4: Substitute the values into the formula: m = -(-10)/20.
Step 5: Simplify the equation: m = 10/20.
Step 6: Calculate the final result: m = 0.5.

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