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Which of the following statement is true?
- a)A plane mirror sometimes form an inverted image.
- b)A concave mirror always forms a virtual, erect and diminished image.
- c)A concave lens always forms a virtual, erect and diminished image
- d)None of these
Correct answer is option 'C'. Can you explain this answer?
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Which of the following statement is true?a)A plane mirror sometimes fo...
Option c is the answer because the option c is only having the statement true
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Which of the following statement is true?a)A plane mirror sometimes fo...
A concave lens always forms a virtual, erect and diminished image.
Explanation:
A concave lens is a lens that is thinner at the center and thicker at the edges. It is also known as a diverging lens because it causes parallel light rays to spread out or diverge. When light rays pass through a concave lens, they refract or bend away from the normal, causing the rays to spread out.
Formation of Image by a Concave Lens:
1. Virtual Image:
When an object is placed in front of a concave lens, the light rays from the object diverge after passing through the lens. These diverging rays appear to come from a point behind the lens. Therefore, a concave lens always forms a virtual image, which means the image cannot be projected onto a screen.
2. Erect Image:
The image formed by a concave lens is always erect, meaning it is not inverted. This is because the light rays diverge after passing through the lens and do not intersect to form a real image.
3. Diminished Image:
A concave lens always forms a diminished image, which means the size of the image is smaller than the size of the object. The divergence of light rays causes the image to be smaller in size.
Contrast with Convex Lens:
A convex lens, on the other hand, is thicker at the center and thinner at the edges. It is also known as a converging lens because it causes parallel light rays to converge or come together. When light rays pass through a convex lens, they refract or bend towards the normal, causing the rays to converge.
A convex lens can form both real and virtual images, depending on the position of the object. Real images are formed when the object is placed beyond the focal point of the lens, while virtual images are formed when the object is placed between the lens and its focal point.
Therefore, the correct statement is that a concave lens always forms a virtual, erect, and diminished image.
Explanation:
A concave lens is a lens that is thinner at the center and thicker at the edges. It is also known as a diverging lens because it causes parallel light rays to spread out or diverge. When light rays pass through a concave lens, they refract or bend away from the normal, causing the rays to spread out.
Formation of Image by a Concave Lens:
1. Virtual Image:
When an object is placed in front of a concave lens, the light rays from the object diverge after passing through the lens. These diverging rays appear to come from a point behind the lens. Therefore, a concave lens always forms a virtual image, which means the image cannot be projected onto a screen.
2. Erect Image:
The image formed by a concave lens is always erect, meaning it is not inverted. This is because the light rays diverge after passing through the lens and do not intersect to form a real image.
3. Diminished Image:
A concave lens always forms a diminished image, which means the size of the image is smaller than the size of the object. The divergence of light rays causes the image to be smaller in size.
Contrast with Convex Lens:
A convex lens, on the other hand, is thicker at the center and thinner at the edges. It is also known as a converging lens because it causes parallel light rays to converge or come together. When light rays pass through a convex lens, they refract or bend towards the normal, causing the rays to converge.
A convex lens can form both real and virtual images, depending on the position of the object. Real images are formed when the object is placed beyond the focal point of the lens, while virtual images are formed when the object is placed between the lens and its focal point.
Therefore, the correct statement is that a concave lens always forms a virtual, erect, and diminished image.
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Which of the following statement is true?a)A plane mirror sometimes form an inverted image.b)A concave mirror always forms a virtual, erect and diminished image.c)A concave lens always forms a virtual, erect and diminished imaged)None of theseCorrect answer is option 'C'. Can you explain this answer?
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