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A boy is running towards a plane mirror ...

A boy is running towards a plane mirror with a speed of `2 m s^(-1)`.With what speed the image of the boy approach him?

A

`+12 m s^(-1)`

B

`+6 m s^(-1)`

C

`-6 m s^(-1)`

D

`-12 m s^(-1)`.

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MODERN PUBLICATION-UNIT TEST -06-EXERCISE
  1. A ray of light is reflected at angle 30^@.If the angle of incidence be...

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  2. A ray of light travels from the point A to B with a uniform speed.On i...

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  3. A boy is running towards a plane mirror with a speed of 2 m s^(-1).Wit...

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  4. A square wire of side 3 cm is placed 25 cm away from a concave mirror ...

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

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  6. A concave mirror of focal length f ( in air ) is immersed in water (mu...

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  7. A convex mirror of focal elongth f produces an image magnified m times...

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  8. A convex mirror forms an imge,which is 1//n times the size of the obje...

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

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  10. A diminihsed virtual image can be produced only with

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  11. A virtual image larger than the object can be produced by

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  12. The field of the view is maximum for

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  13. In case of spherical mirrors,which of the followed do/does not depend ...

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  14. Light appears to travel in a straight lines,since

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  15. If the light prpagating along a straight ine bends by a small but fixe...

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  16. A glass slab of thickness 4 cm contains the same number of waves as 5 ...

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  17. The lateral shift produced in a parallel sided glass slab depends on

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  18. Light passing from air to glass is refracted ,as is light passing from...

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  19. A person swimming at the bottom of a swimming pool lookds up to the di...

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  20. Total interval reflection takes place, when light travels from

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