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An object is placed at a distance of 40 ...

An object is placed at a distance of `40 cm` from a concave mirrorr of focal length `15 cm`. If the object is displaced through a distance of `20 cm` towards the mirrorr, the displacement of the image will be

A

30 cm towards the mirror

B

36 cm away from the mirror

C

30 cm away from the mirror

D

36 cm towards the mirror

Text Solution

Verified by Experts

The correct Answer is:
B
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MOTION-RAY OPTICS-Exercise-3
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  2. The refractive index of the material of a prism is sqrt(2) and the ang...

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  3. An object is placed at a distance of 40 cm from a concave mirrorr of f...

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  4. A fish looking up through the water sees the outside world contained i...

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  5. Two point white dots are 1mm apart on a black paper. They are viewed b...

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  6. A thin glass (refractive index 1.5) lens has optical power of -5D in a...

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  7. A light ray is incident perpendicularly to one face of a 90^circ prism...

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  8. The refractive index of a glass is 1.520 for red light and 1.525 for b...

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  9. Two lenses of power -15D and +5 D are in contact with each other. The ...

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  10. A student measures the focal length of a convex lens by putting an obj...

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  11. In an optics experiment, with the position of the object fixed, a stud...

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  12. A transparent solid cylinder rod has a refractive index of (2)/(sqrt(3...

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  13. As the beam enters the denser medium, it will

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  14. The speed of light in the medium is

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  15. A beaker contains water up to a height h(1) and kerosene of height h(2...

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  16. When monochromatic red light is used instead of blue light in a convex...

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  17. Statement-1 : On viewing the clear blue portion of the sky through a C...

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  18. Let the x-z plane be the boundary between two transparent medi...

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  19. A car is fitted with a convex side-view mirror of focal length 20 cm. ...

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  20. An object 2.4 m in front of a lens forms a sharp image on a film 12 cm...

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