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Optical Instruments (Part - 5) - Science, Class 10 Video Lecture

FAQs on Optical Instruments (Part - 5) - Science, Class 10 Video Lecture

1. What are some examples of optical instruments?

Ans. Some examples of optical instruments include microscopes, telescopes, cameras, binoculars, and spectacles. These instruments use lenses and mirrors to manipulate and focus light for various purposes.

2. How does a microscope work?

Ans. A microscope works by using a combination of lenses to magnify tiny objects or details that are not visible to the naked eye. The objective lens captures the light from the specimen, magnifies it, and sends it to the eyepiece lens, which further magnifies the image for our observation.

3. What is the function of a telescope?

Ans. The main function of a telescope is to gather and magnify light from distant objects in space, allowing us to observe them in detail. It consists of an objective lens or mirror that collects light and focuses it to form an image, which is then magnified by the eyepiece lens for observation.

4. How do cameras use optical instruments?

Ans. Cameras use optical instruments such as lenses to focus light onto a photosensitive surface, such as a film or an image sensor, to capture images. The lens adjusts the focus and controls the amount of light entering the camera, while the image sensor records the light intensity and color information to produce a photograph.

5. What is the purpose of spectacles?

Ans. Spectacles, also known as glasses or eyeglasses, are optical instruments used to correct vision problems. They contain lenses that compensate for refractive errors in the eye, such as nearsightedness or farsightedness. The lenses help to focus light properly onto the retina, improving visual clarity.

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Sep 05, 2025 Last updated

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