A concave mirror forms an enlarged, erect, virtual image of an object, only when the object is placed

• A

  at focus
• Correct answer
  B

  between pole and focus
• C

  at the centre of curvature
• D

  between focus and centre of curvature

Solution

Image formed by a concave mirror is erect, enlarged and virtual only when object is placed between pole and focus as shown below,

Hence, the correct answer is option: 'B'.