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प्रश्न
A shopkeeper wanted to fix a mirror which will give a maximum view of his shop. What type of mirror should he use? Give reason.
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उत्तर
He should use a convex mirror as it can form images of objects spread over a large area.
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संबंधित प्रश्न
A concave mirror always forms a real image.
The letter F is placed in front of a plane mirror:
What is the name of the phenomenon involved?
Write the mirror formula. Give the meaning of each symbol which occurs in it.
- A small object is placed 150 mm away from a diverging lens of focal length 100 mm.
- Copy the figure below and draw rays to show how an image is formed by the lens.
- Calculate the distance of the image from the lens by using the lens formula.
- Copy the figure below and draw rays to show how an image is formed by the lens.
- The diverging lens in part (a) is replaced by a converging lens also of focal length 100 mm. The object remains in the same position and an image is formed by the converging lens. Compare two properties of this image with those of the image formed by the diverging lens in part (a).
Complete the following diagrams shown in Fig. by drawing the reflected ray for each of the incident ray A and B.
Figure shows a concave mirror with its pole at P, focus F and centre of curvature C. Draw ray diagram to show the formation of image of an object OA.
Draw a ray diagram to show the formation of image by a concave mirror for an object placed between its pole and focus. State three characteristics of the image.
A concave mirror forms a virtual image of size twice that of the object placed at a distance 5 cm from it. Find:
- the focal length of the mirror
- position of image
Define the term principal focus in case of convex mirror. Draw a convex mirror and show its principal focus and focal length clearly.
A concave mirror can be used to produce a parallel beam of light. Draw a ray to illustrate this.
