Question
Which type of lens is used in a simple microscope?
The correct answer is
Biconvex
Simple Microscope Lens Type Identification
A simple microscope, essentially a magnifying glass, uses a single convex lens to enlarge the appearance of small objects.
Key Requirement: To function as a simple microscope, the lens must be able to produce an image that is:
- Virtual
- Erect
- Magnified
A biconvex lens is a converging lens. When an object is placed closer to the lens than its focal point (distance $u < f$), it forms a virtual, erect, and magnified image on the same side as the object. This property makes the biconvex lens ideal for use in simple microscopes.
Therefore, the correct lens type used in a simple microscope is a biconvex lens.
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Important Questions from Optics
- The line joining the centre of curvature and the pole of a given spherical mirror is called __________.
- What is the condition for total internal reflection to occur?
- The critical angle for diamond is approximately ________.
- A student shows a concave lens forming a diminished real image on the screen. The mistake is:
- The phenomenon of dispersion of light was first explained by ________.
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