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A man is 6 feet tall. In order to see his entire image, he requires a plane mirror of minimum length equal to:

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Important Questions on Ray Optics

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Alpha Question Bank for Medical: Physics>Chapter 30 - Ray Optics>Exercise-1>Q 20
A convex mirror has a focal length f. A real object is placed at a distance f in front of it from the pole, then it produces an image at-
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Alpha Question Bank for Medical: Physics>Chapter 30 - Ray Optics>Exercise-1>Q 21

The image formed by a convex mirror of focal length 30 cm is a quarter of the size of the object. Then the distance of the object from the pole, 

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Alpha Question Bank for Medical: Physics>Chapter 30 - Ray Optics>Exercise-1>Q 22
The largest distance of the image of a real object from a convex mirror of focal length 10 cm can be-
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Alpha Question Bank for Medical: Physics>Chapter 30 - Ray Optics>Exercise-1>Q 23
In case of concave mirror, the minimum distance between a real object and its real image is-
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Alpha Question Bank for Medical: Physics>Chapter 30 - Ray Optics>Exercise-1>Q 24
A luminous point object is moving along the principal axis of a concave mirror of focal length 12 cm towards it. When its distance from the mirror is 20 cm its velocity is 4 cm s-1. The velocity of the image in cm s-1 at that instant is
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Alpha Question Bank for Medical: Physics>Chapter 30 - Ray Optics>Exercise-1>Q 25
Which of the following can form diminished, virtual and erect image of your face?
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Alpha Question Bank for Medical: Physics>Chapter 30 - Ray Optics>Exercise-1>Q 26
The focal length of a concave mirror is 20 cm. Determine where an object must be placed to form an image magnified two times when the image is real-
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Alpha Question Bank for Medical: Physics>Chapter 30 - Ray Optics>Exercise-1>Q 27
A convex mirror of focal length f forms an image which is 1/n times the object. The distance of the object from the mirror is