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CBSE Class 10 Answered

A particle is moving towards a concave mirror of focal length 30 cm along it's axis with a constant velocity of 4 cm/s . Find the velocity of image when object is at 90 cm from a mirror.
Asked by Shreyash Taori | 27 Nov, 2013, 08:46: PM
answered-by-expert Expert Answer
Answered by Faiza Lambe | 28 Nov, 2013, 10:41: AM

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CBSE 10 - Physics
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If rays are coming from a different object to adouble convex lens with two different refractive indices Mu1 and Mu 2 above and below the principal axis, explain how many images will be seen?
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The image of a candle flame placed at a distance of 30 cm from a spherical lens is formed on a screen placed at a distance of 60 cm from the lens. If the height of the flame is 2.4 cm,find the height of its image 
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