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An object is kept in front of a concave ...

An object is kept in front of a concave mirror of focal length 15 cm.The image formed is three times the size of the object.Calculate two possible distances of the object from the mirror.

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MODERN PUBLICATION-REFLECTION OF LIGHT-EXERCISE
  1. An object of 3 cm length is placed at 10 cm from the ple of a concave ...

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  2. An object placed 12 cm from the pole of a concave mirror produces a re...

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  3. An erect image of 3 tiems the size of the object is obtined with a con...

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  4. An object 8 cm long is placed at a distance of 100 cm from a concave m...

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  5. An object 2 cm high is placed at a distance of 5 cm from a concave mir...

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  6. An object is placed in front of a concave mirror of radius of curvatur...

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  7. A concave mirror produeces a real image of magnificaion 1//2,when an o...

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  8. Find the position of an object,which when placed in front of a concave...

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  9. An object is kept in front of a concave mirror of focal length 15 cm.T...

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  10. An object is kept in front of a concave mirror of focal length 15 cm.T...

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  11. An object 5.0 cm of length is placed at a distance of 20 cm in front o...

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  12. An object of 3 cm height is placed at a distance of 60 cm from a conve...

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  13. When an object is placed at a distance of 60 cm from a convex spherica...

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  14. A spherical convex mirror of focal length 25 cm has an object of lengt...

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  15. An object is placed in front of a convex mirror of focal length 30 cm....

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  16. An object is placed exactly midway between a convex and concave mirror...

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  17. A candle is flame 1 cm high is placed at a distance of 1.5 metre from ...

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  18. If a concave mirror of focal length f produces a real image n times th...

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  19. With a concave mirror,the magnification is found to be four times as l...

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  20. A short linear object of length b lies along the axis of a concave mir...

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