Convex lenses are used in various optical instruments due to their ability to focus light. Here's how they are used in the instruments you mentioned:

1. Simple Microscope: A simple microscope is essentially a magnifying glass, which is a single convex lens. The lens magnifies the object by bending the light rays towards the eye, making the object appear larger than it actually is.

2. Compound Microscope: A compound microscope uses two convex lenses: the objective lens and the eyepiece. The objective lens creates a magnified image of the specimen, and the eyepiece further magnifies that image. The two lenses work together to create a much larger image than a simple microscope can produce.

3. Telescope: A refracting telescope uses two convex lenses. The larger lens (objective lens) collects light from a distant object and brings that light, or image, to a point or focus. The second lens (eyepiece) magnifies the image formed by the objective lens.

4. Periscope: A periscope uses two mirrors to allow the viewer to see over or around obstacles. However, some periscopes use a pair of convex lenses in addition to the mirrors to magnify the image. The first lens gathers light from the scene, and the second lens magnifies the image for the viewer.

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Convex lenses are used in various optical instruments due to their ability to focus light. Here's how they are used in the instruments you mentioned:

1. Simple Microscope: A simple microscope is essentially a magnifying glass, which is a single convex lens. The lens magnifies the object by bending the light rays towards the eye, making the object appear larger than it actually is.

2. Compound Microscope: A compound microscope uses two convex lenses: the objective lens and the eyepiece. The objective lens creates a magnified image of the specimen, and the eyepiece further magnifies that image. The two lenses work together to create a much larger image than a simple microscope can produce.

3. Telescope: A refracting telescope uses two convex lenses. The larger lens (objective lens) collects light from a distant object and brings that light, or image, to a point or focus. The second lens (eyepiece) magnifies the image formed by the objective lens.

4. Periscope: A periscope uses two mirrors to allow the viewer to see over or around obstacles. However, some periscopes use a pair of convex lenses in addition to the mirrors to magnify the image. The first lens gathers light from the scene, and the second lens magnifies the image for the viewer.

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Convex lenses are used in various optical instruments due to their ability to focus light. Here's how they are used in the instruments you mentioned:

1. Simple Microscope: A simple microscope is essentially a magnifying glass, which is a single convex lens. The lens magnifies the object by bending the light rays towards the eye, making the object appear larger than it actually is.

2. Compound Microscope: A compound microscope uses two convex lenses: the objective lens and the eyepiece. The objective lens creates a magnified image of the specimen, and the eyepiece further magnifies that image. The two lenses work together to create a much larger image than a simple microscope can produce.

3. Telescope: A refracting telescope uses two convex lenses. The larger lens (objective lens) collects light from a distant object and brings that light, or image, to a point or focus. The second lens (eyepiece) magnifies the image formed by the objective lens.

4. Periscope: A periscope uses two mirrors to allow the viewer to see over or around obstacles. However, some periscopes use a pair of convex lenses in addition to the mirrors to magnify the image. The first lens gathers light from the scene, and the second lens magnifies the image for the viewer.

Convex lens are used inSimple microscopeCompound microscopeTelescopePeriscope

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