Physics - Geometrical Optics Question with Solution | TestHub
You are given two lenses, a converging lens with focal length +10 cm and a diverging lens with focal length - 20 cm . Which of the following would produce a virtual image that is larger than the real object?
Options:
Answer:
Solution:
For a converging lens to produce a virtual image that is larger than the object, the object must be placed within the focal length of the lens. In this case, the converging lens has a focal length of +10 cm.
Option A: Placing the object 5 cm from the converging lens. Since 5 cm is less than the focal length of 10 cm, this will produce a virtual and magnified image.
Option B: Placing the object 15 cm from the converging lens. Since 15 cm is greater than the focal length of 10 cm, this will produce a real image.
For a diverging lens, the image is always virtual, upright, and smaller than the object, regardless of the object's position. Therefore, options C and D will not produce a virtual image larger than the object.
Therefore, the correct answer is A.