Which of the following statements is/are correct regarding image formation in…
2019
Which of the following statements is/are correct regarding image formation in plane mirror?
A. Image is erect.
B. Image is real.
C. Image is laterally inverted.
D. The image size is same that of object.
- A.
A, B, C
- B.
A, C, D
- C.
B, C, D
- D.
A, B, D
Attempted by 33 students.
Show answer & explanation
Correct answer: B
Concept
A plane mirror forms an image by reflecting light. The reflected rays only appear to diverge from a point behind the mirror, so they never actually meet — this makes the image virtual (it cannot be caught on a screen). For a plane mirror the standard characteristics are: the image is virtual and erect, it is laterally inverted (left and right appear swapped), it has the same size as the object (magnification = 1), and it lies as far behind the mirror as the object is in front.
Applying it to each statement
Image is erect — TRUE. The image stays upright, the same way up as the object.
Image is real — FALSE. A plane mirror always forms a virtual image; the rays only seem to come from behind the mirror and cannot be projected onto a screen.
Image is laterally inverted — TRUE. The mirror reverses the sense of left and right, which is why text appears reversed in a mirror.
Image size is the same as the object — TRUE. The magnification of a plane mirror is exactly 1, so the image is neither enlarged nor diminished.
Result
Statements A, C and D are correct, while statement B is wrong because the image is virtual, not real. Hence the correct combination is A, C, D.