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A man of height 170cmwants to see his co...

A man of height `170cm`wants to see his complete image in a plane mirror(while standing).His eyes are at a height of `160cm`from the ground.

A

Minimum length of the mirror = 80 cm

B

Minimum length of the mirror = 85 cm

C

Bottom of the mirror should be at a height 80 cm

D

Bottom of the mirror should be at a height of 85 cm

Text Solution

Verified by Experts

The correct Answer is:
B,C
Required length of mirror = `M_(1)M_(2)` So the mirror should be the length of half of the size of man= `(170)/(2)` = 85 cm & it is placed such that its lower edge at a half the height of eye level height.
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ALLEN -GEOMETRICAL OPTICS-EXERCISE-2
  1. A certain prism is found to produce a minimum of38^(@).It produces a d...

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  2. A ray incident at an angle 53^(@) on a prism emerges at an angle 37^(@...

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  3. A man of height 170cmwants to see his complete image in a plane mirror...

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  4. Two plane mirrors at an angle such that a ray incident on a mirror und...

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  5. If the equation of mirror is given by y= 2//pi "sin"pix (y gt 0 , 0 le...

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  6. In the fig. shown consider the first reflection at the plane mirror an...

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  7. The figure shows a ray incident a angle i=pi//3 of the plot drawn show...

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  8. A ray of light is incident normally on one face of 30^(@) - 60^(@) - 9...

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  9. A curved surface of radius R separates two medium of refractive indice...

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  10. A curved surface of radius R separates two medium of refractive indice...

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  11. A curved surface of radius R separates two medium of refractive indice...

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  12. An object O is kept infront of a converging lens of focal length 30 cm...

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  13. A converging lens of focal length f(1) is placed in front of and coaxi...

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  14. Choose the correct alternative corresponding to the object distance 'u...

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  15. An object and a screen are fixed at a distance d apart. When a lens of...

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  16. A diminished image of an object is to be obtained on a screen 1.0 m fr...

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  17. A convex lens forms an image of an object on a screen. The height of t...

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  18. A ray is incident on the first prism at an angle of incidence of 53^(@...

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  19. For refractin of light through a prism

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  20. Two lenses in contact made of materials with dispersive powers in the ...

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