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A concave mirror is placed on a horizont...

A concave mirror is placed on a horizontal table, with its axis directed vertically upwards. Let O be the pole of the mirror and C its centre of curvature. A point object is placed at C. It has a real image, also located at C. If the mirror is now filled with water, the image will be.

A

(a)real and will remain at C

B

(b)real and located at a point between C and `oo`

C

(c)virtual and located at a point between C and O

D

(d)real and located at a point between C and O

Text Solution

Verified by Experts

The correct Answer is:
D
The ray diagram is shown in figure . Therefore , the image will be real and between C and O.
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Knowledge Check

  • An object is placed at a distance 40 cm in front of concave mirror. Focal length of mirror is 20 cm, so what will be type of image ?

    A
    Virtual and inverted
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    Real and erect
    C
    Real, inverted and of the same size of object
    D
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  • An object is placed at a distance of 40 cm from a concave mirror of focal length 15 cm. If the object is displaced through a distance of 20 cm towards the mirror, the displacement of the image will be

    A
    36 cm towards the mirror
    B
    30 cm away from the mirror
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    30 cm towards the mirror
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  • A beaker having water of refractive index of 4/3 water is filled upto 16 cm in it. As shown in figure, a concave mirror is kept 3 cm above the surface of water. If the object is place at the bottom of beaker and its image is ob tained from this mirror at 7 cm below the surface of water, then what will be the focal length of this concave mirror ?

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