Virtual Image Formation by Optical Devices
The question asks which optical device can produce a virtual image that is larger than the object. Let's analyze the properties of each option:
Concave Mirror Properties
A concave mirror can form different types of images depending on the object's position:
- When an object is placed beyond the focal point (F), it forms a real image.
- When an object is placed between the pole (P) and the focal point (F), it forms a virtual, erect, and magnified image behind the mirror.
Therefore, a concave mirror meets the criteria.
Other Optical Devices
Let's examine why the other options do not fit:
- Plane mirror: Always forms a virtual image that is erect and the same size as the object. It cannot produce magnification.
- Concave lens: Always forms a virtual, erect, and diminished image (smaller than the object), regardless of the object's position.
- Convex mirror: Always forms a virtual, erect, and diminished image (smaller than the object), regardless of the object's position.
Final Answer Derivation
Based on the analysis, only the concave mirror is capable of producing a virtual image that is larger than the object when the object is positioned appropriately (between the pole and the focal point).
Correct Option: A. Concave mirror
Similar Questions
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- Which colour deviates the least when light passes through a prism?
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- The blue colour of the sky is due to the:
- If a lens has a focal length of $25\text{ cm}$, what will be the power of that lens?
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Important Questions from Optics
Who was the first one to use a glass prism to obtain the spectrum of sunlight?
Twinkling of stars is due to:
In which a convex mirror is used?
A. Rear View mirrors in vehicles
B. Glass windows
C. Makeup Mirror
D. Kaleidoscope
An object is placed 10 cm in front of a lens. The image formed is real, inverted and of same size as the object. What is the focal length and nature of the lens?
The power of a lens is -2.5 D. The type of lens and its focal length are respectively:
