engineering recuitment ICAR Technician 2021 Mock Test (Re-Exam) General Science Physics Optics

A needle of height 4 cm is placed at a distance of 45 cm in front of concave lens of focal length 30 cm. The height of the image of the needle will be:

1
2.2 cm
2
1.6 cm
3
1.9 cm
4
2.5 cm
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