Question:medium
The distance (v) of a virtual image formed by a lens of focal length 15 cm can never exceed a certain finite value, then this value will be:
The distance (v) of a virtual image formed by a lens of focal length 15 cm can never exceed a certain finite value, then this value will be:
Show Hint
A key property to remember: A concave lens always forms a virtual, erect, and diminished image, located between the focus and the optical center.
Updated On: Mar 10, 2026
- less than 15 cm
- between 15 cm to 30 cm
- less than or equal to 30 cm
- less than or equal to 15 cm
Show Solution
The Correct Option is D
Solution and Explanation
Step 1: Understanding the Concept:
This question pertains to the characteristics of images formed by a concave lens.
Step 2: Detailed Explanation:
A concave lens always produces a virtual, erect, and diminished image for any position of the real object.
The image is always formed between the optical center (\( O \)) and the focus (\( F \)) on the same side as the object.
Therefore, the magnitude of the image distance \( v \) is always less than or equal to the focal length \( f \).
Given \( f = 15\text{ cm} \), the image distance \( v \leq 15\text{ cm} \).
Step 3: Final Answer:
The value is less than or equal to 15 cm.
This question pertains to the characteristics of images formed by a concave lens.
Step 2: Detailed Explanation:
A concave lens always produces a virtual, erect, and diminished image for any position of the real object.
The image is always formed between the optical center (\( O \)) and the focus (\( F \)) on the same side as the object.
Therefore, the magnitude of the image distance \( v \) is always less than or equal to the focal length \( f \).
Given \( f = 15\text{ cm} \), the image distance \( v \leq 15\text{ cm} \).
Step 3: Final Answer:
The value is less than or equal to 15 cm.
Was this answer helpful?
0
Top Questions on Lenses
- The graph below shows the variation of image distance (v) with the object distance (u) when an object is kept in front of a lens. Identify the type of lens used.
- What would be the magnification (more than 1 / less than 1 / equal to 1) if the object is placed between F and 2F of the above lens?
- An object placed in front of a convex lens, forms an image of same size on a screen. Moving the object 12 cm closer to the lens results in the formation of a real image which is three times the size of the object. Calculate the focal length of the lens.
- The refractive index of diamond is ..................
- Want to practice more? Try solving extra ecology questions todayView All Questions
