A concave mirror produces a magnification of + 4. The object is placed : (a) at the focus (b) between focus and centre of curvature (c) between focus and pole (d) beyond the centre of curvature

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Solution

Answer: (c) between focus and pole

Explanation: magnification of + 4 means that image is large and erect. So object is placed between focus and pole.

Diagram:

The dotted line represents the image.

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Similar questions

Q. In order to obtain a magnification of, −0.6 (minus 0.6) with a concave mirror, the object must be placed:

(a) at the focus
(b) between pole and focus
(c) between focus and centre of curvature
(d) beyond the centre of curvature

Q. If a concave mirror forms a real magnified image of an object, the object is located

(a) between pole and focus
(b) between focus and centre of curvature
(c) beyond centre of curvature
(d) at centre of curvature

Question 30
Draw ray diagrams showing the image formation by a concave mirror when an object is placed

(a) between pole and focus of the mirror
(b) between focus and centre of curvature of the mirror
(c) at centre of curvature of the mirror
(d) a little beyond centre of curvature of the mirror
(e) at infinity

The image formed by a concave mirror is virtual, erect and magnified. The position of object is : (a) at focus (b) between focus and centre of curvature (c) at pole (d) between pole and focus

The image formed by a concave mirror is observed to be virtual, erect and larger than the object. Where should be the position of the object?

(a) Between the principal focus and the centre of curvature

(b) At the centre of curvature

(d) Between the pole of the mirror and its principal focus.

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A concave mirror produces a magnification of + 4. The object is placed : (a) at the focus (b) between focus and centre of curvature (c) between focus and pole (d) beyond the centre of curvature

Answer: (c) between focus and pole Explanation: magnification of + 4 means that image is large and erect. So object is placed between focus and pole. Diagram: The dotted line represents the image.

Answer: (c) between focus and pole

Explanation: magnification of + 4 means that image is large and erect. So object is placed between focus and pole.

Diagram:

The dotted line represents the image.