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Q1
(CDS-I/2022)
Science & Technology › Basic Science (Physics, Chemistry, Biology) › Geometrical optics
Answer Verified
If the magnification produced by a lens is +2, then the image is :
Result
Your answer:
—
·
Correct:
C
Explanation
The magnification (m) produced by a lens is defined by both its sign and its magnitude. A positive sign (+) in the magnification value indicates that the image is virtual and erect [4]. Conversely, a negative sign would indicate a real and inverted image [2]. The magnitude of the magnification determines the relative size of the image compared to the object. If the absolute value of magnification (|m|) is greater than 1, the image is enlarged or larger than the object [3]. In this case, a magnification of +2 signifies that the image is virtual, erect, and twice the size of the object (larger) [3]. This specific condition occurs in a convex lens when the object is placed between the optical center and the principal focus [3].
Sources
- [1] Science , class X (NCERT 2025 ed.) > Chapter 9: Light – Reflection and Refraction > Magnification > p. 143
- [3] Science , class X (NCERT 2025 ed.) > Chapter 9: Light – Reflection and Refraction > Activity 9.12 > p. 152
- [4] Science , class X (NCERT 2025 ed.) > Chapter 9: Light – Reflection and Refraction > Solution > p. 156
- [2] Science , class X (NCERT 2025 ed.) > Chapter 9: Light – Reflection and Refraction > Solution > p. 157
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