An object is placed in front of a concave mirror at a point between its curvature and focus. The image will be formed at:

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RRC Group D Previous Paper 23 (Held On: 19 Sept 2018 Shift 2)
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  1. A point between the focus and the centre of curvature 
  2. The centre of curvature
  3. A point beyond the centre of curvature
  4. The focus

Answer (Detailed Solution Below)

Option 3 : A point beyond the centre of curvature
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RRB Group D Full Test 1
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Detailed Solution

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The correct answer is Option 3.

CONCEPT:

Different positions of the object and their image by a concave mirror

Position of the object (Concave mirror) Position of image size of the image in comparison to the object Nature of image
At Infinity At focus Highly diminished Real, inverted
Between Infinity and the centre of curvature Between the focus and centre of curvature Diminished Real, inverted
At the centre of curvature At the centre of curvature Of the same size Real, inverted
At focus At Infinity Highly enlarged Real, inverted
Between the focus and centre of curvature Between the centre of curvature and infinity Enlarged  Real, inverted

EXPLANATION:

  • An object is placed in front of a concave mirror at a point between its curvature and focus. The image will be formed at a point beyond the center of curvature. So option 3 is correct.

Important Points

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