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Questions and Answers
What is the name of an image formed on a screen by a concave mirror?
What is the name of an image formed on a screen by a concave mirror?
How does the image formed by a concave mirror compare to that formed by a plane mirror?
How does the image formed by a concave mirror compare to that formed by a plane mirror?
What type of image is formed by the inner surface of a spoon when acting like a concave mirror?
What type of image is formed by the inner surface of a spoon when acting like a concave mirror?
When conducting Activity 15.6 with the concave mirror, what is observed on the sheet of paper when the mirror is adjusted correctly?
When conducting Activity 15.6 with the concave mirror, what is observed on the sheet of paper when the mirror is adjusted correctly?
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What happens when you try to get the light reflected by a concave mirror on a sheet of paper during Activity 15.6?
What happens when you try to get the light reflected by a concave mirror on a sheet of paper during Activity 15.6?
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What do we call an image that cannot be obtained on a screen, like the one formed by a plane mirror?
What do we call an image that cannot be obtained on a screen, like the one formed by a plane mirror?
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Study Notes
Concave Mirrors
- A concave mirror can form a real image of an object on a screen.
- To obtain a real image, move the screen until a sharp image is formed, making sure the screen does not obstruct the light from the object.
- The image formed by a concave mirror can be smaller or larger in size than the object.
- The image may also be real or virtual.
Uses of Concave Mirrors
- Concave mirrors are used by doctors to examine eyes, ears, nose, and throat.
- Dentists use concave mirrors to see an enlarged image of the teeth.
- The reflectors of torches, headlights of cars, and scooters are concave in shape.
Convex Mirrors
- A convex mirror forms a virtual image of an object.
- The image is always smaller in size than the object.
- Convex mirrors are used as side mirrors in automobiles to help drivers see the traffic behind them.
Convex Mirror Characteristics
- The image formed by a convex mirror is always erect and smaller in size.
- Convex mirrors cannot form real images at any distance of the object from the mirror.
Lenses
- Lenses are transparent and light can pass through them.
- Concave lenses are thinner in the middle than at the edges.
- Convex lenses are thicker in the middle than at the edges.
Images Formed by Lenses
- A magnifying glass is used to read very small print.
- Concave lenses can form images of objects spread over a large area.
Spherical Mirrors
- A spherical mirror is a part of a sphere.
- The inner surface of a spoon acts like a concave mirror, while its outer surface acts like a convex mirror.
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Description
Learn how to set up an experiment to observe real and virtual images formed by a concave mirror. Follow the instructions to position the screen and candle properly to obtain sharp images. Understand the concept of image formation by concave mirrors.
