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A point object is placed on the princi...

A point object is placed on the principle axis at `60cm` in fornt of a concave mirror of focal length `40cm` on the principle axis. If the object is moved with a velocity of 10cm/s (a) find velocity of image along principle axis (b) perpendicular axis, find the velocity of image at the moment.

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The correct Answer is:
(a) `40cm//s` opposite to the velocity fo object.
(b) `20cm//s` opposite to the velocity of object.
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RESONANCE ENGLISH-GEOMATRICAL OPTICS -Exercise-1
  1. The radius of curvature of a convex spherical mirror is 1.2m. How fa...

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  2. A converging beam of light rays in incident on a concave spherical ...

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  3. A point object is placed on the principle axis at 60cm in fornt ...

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  4. A man uses a concave mirror for shaving. He keeps his face at a dist...

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  5. Two spherical mirros (convex and concave) having the same focal leng...

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  6. A light ray falling at an angle of 45^@ with the surface of a clean sl...

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  7. A light ray is incident at 45^(@) on a glass slab. The slab is 3cm thi...

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  8. In the given figure an abserve in air (n=1) sees the botoom of a bre...

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  9. In the given figure rasy incident on an interface would converge 10c...

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  10. A fish is rising up veritcally inside a pond with velocity 4 m//s, and...

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  11. Find the apparednt distance between the observer and the object shwon ...

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  12. Find the apparent depth of object of the object seen by observe A (in...

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  13. Locate the image fo the point P as seen by the eye in the figure.

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  14. A small object is placed at the centre of the bottom of a cylindrical ...

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  15. A point source is placed at a depth h below the surface of water (re...

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  16. Light falls from glass (mu=1.5) to air. Find the angle of incidence fo...

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  17. At what values fo the refractive index of a recantangular prism can...

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  18. A prism (n = 2) of apex angle 90^(@) is palced in air (n = 1). What ...

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  19. The refracting angle of a glass prism is 30^@. A ray is incident onto ...

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  20. Find the angle of devaition suffered by the light ray shown in figu...

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