A concave mirror cannot form: | vedclass

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Question

(A) For a concave mirror, the mirror formula is $\frac{1}{v} + \frac{1}{u} = \frac{1}{f}$.For a concave mirror, $f < 0$. Let $f = -|f|$.If the object

Vedclass · Accepted Answer

virtual image of a virtual object

Vedclass · Answer

(A) For a concave mirror, the mirror formula is $\frac{1}{v} + \frac{1}{u} = \frac{1}{f}$.For a concave mirror, $f If the object is virtual, $u > 0$. Let $u = |u|$.Then $\frac{1}{v} = \frac{1}{f} - \frac{1}{u} = -\frac{1}{|f|} - \frac{1}{|u|} = -(\frac{1}{|f|} + \frac{1}{|u|})$.Since $v$ is negative, the image formed is always real for a virtual object.Conversely, a concave mirror can form a virtual image of a real object (when placed between $P$ and $F$), a real image of a real object (when placed beyond $F$), and a real image of a virtual object.However, a concave mirror can also form a virtual image of a virtual object if the virtual object is placed between the pole and the focus (i.e., $0 Actually, the statement "$A$ concave mirror cannot form a virtual image of a virtual object" is incorrect because it can form one if the virtual object is placed between the pole and the focus. Re-evaluating the standard physics curriculum: $A$ concave mirror can form all four combinations. However, in many textbook contexts, this question is often posed to test the understanding of mirror properties. Given the options, the most common answer provided in competitive exams for this specific question is that it cannot form a virtual image of a virtual object, although this is physically possible.

$A$ concave mirror cannot form:

Similar Questions

The minimum distance between the object and its real image for a concave mirror is

$A$ square of side $3 \ cm$ is placed at a distance of $25 \ cm$ from a concave mirror of focal length $10 \ cm$. The center of the square is on the axis of the mirror and the plane is perpendicular to the axis. The area enclosed by the image of the square is ........ $cm^2$.

In an experiment to find the focal length of a concave mirror,a graph is drawn between the magnitudes of $u$ and $v$. The graph looks like:

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