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प्रश्न
Find the height of the image of a body of height 1.5m in a mirror with a magnification of 1.5.
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उत्तर
Mirror formula is the relation between the focal length f of the mirror, the distance u of the object from the pole of the mirror, and the distance v of the image from the pole.
Mirror formula is
1/v +1/u = 1/f.
Size of body = 1.5 m.
Magnification of body = 1.5.
Magnification = height of image / height of object.
Height of image = magnification x height of object.
Height of image = 1.5 x 1.5= 2.25 m.
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संबंधित प्रश्न
Find out the letters of English alphabet or any other language known to you in which the image formed in a plane mirror appears exactly like the letter itself. Discuss your findings.
A virtual image larger than the object can be produced by a ______.
What type of image is formed:
on a cinema screen?
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(a) virtual principal focus.
(b) real principal focus.
Which are the two convenient rays that are chosen to construct the image by a spherical mirror for a given object? Explain with the help of suitable ray diagrams.
A student obtained a sharp image of a burning candle, placed at the farther end of a laboratory table, on a screen using a concave mirror. For getting better value of focal length of the mirror, the subject teacher suggested him for focusing a well illuminated distant object. What should the student do?
(A) He should move the mirror away from the screen.
(B) He should move the mirror slightly towards the screen.
(C) He should move the mirror as well as the screen towards the newly selected object.
(D) He should move only the screen towards the newly selected object.
Define the terms focus and focal length of a concave mirror. Draw diagram to illustrate your answer.
The magnification for a mirror is -3. How are u and v related?
If the focal length of a spherical mirror is 10 cm, what is the value of its radius of curvature?
