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Question

The magnification produced by a spherical mirror is +0.75. The image is:

This question was previously asked in
RRB NTPC 2024 Undergraduate CBT 1 Question Paper (29-Aug-2025) (Shift 1)
The correct answer is

‘Virtual, erect and diminished

The magnification (m) produced by a spherical mirror is given by the formula:

m = - (Image Height / Object Height) = (Image Distance / Object Distance)

Given the magnification is +0.75, it indicates that the image is virtual and erect. For mirrors, a positive magnification generally means the image is virtual and erect since real images produced by mirrors are inverted, leading to a negative magnification.

Furthermore, a magnification value less than 1 (m = +0.75) suggests that the image is smaller than the object, thus it is diminished.

Based on this analysis, the image is virtual, erect, and diminished.

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