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Image Formation by Convex Mirror and its application as Rear view Mirror Video Lecture | Science Class 7 (Old NCERT)
FAQs on Image Formation by Convex Mirror and its application as Rear view Mirror Video Lecture - Science Class 7 (Old NCERT)
| 1. How does a convex mirror form an image? |  |
Ans. A convex mirror forms an image by reflecting light rays diverging from an object. The reflection occurs on the curved surface of the mirror, causing the light rays to spread out. This spreading out of light rays creates a virtual, diminished, and erect image.
| 2. What are the characteristics of an image formed by a convex mirror? | |
Ans. The image formed by a convex mirror is always virtual, meaning it cannot be projected onto a screen. It is also always diminished, meaning it appears smaller than the actual object. Additionally, the image is erect, which means it appears in the same orientation as the object.
| 3. How does a convex mirror work as a rear view mirror? | |
Ans. A convex mirror is used as a rear view mirror due to its wide field of view. Its curved shape allows it to reflect a larger area, making it easier for the driver to see objects behind the vehicle. The convex mirror also provides a wider perspective, reducing blind spots and enhancing safety while driving.
| 4. What are the advantages of using a convex mirror as a rear view mirror? | |
Ans. Using a convex mirror as a rear view mirror offers several advantages. It provides a wider field of view, allowing the driver to see more of the surroundings and reducing blind spots. The convex mirror also offers a greater depth of field, making it easier to judge distances accurately. Additionally, it is less prone to distortion and provides a clearer image compared to flat mirrors.
| 5. Can a convex mirror form a real image? | |
Ans. No, a convex mirror cannot form a real image. Due to its shape and the way it reflects light, the image formed by a convex mirror is always virtual, meaning it cannot be projected onto a screen. The image formed is only a reflection of the light rays, and it appears behind the mirror.
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