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Mark the correct options.
When the final rays are converging then the image of the object will be real. It is because the converging rays are always formed in front of the mirror (concave mirror). The image formed is called real image because the final rays are actually converging in front of mirror to form the image. While the virtual image is formed when the final rays are diverging and they appear to be converging beyond the mirror but they never converge in real.
Hence option A is correct.
Consider three converging lenses L1, L2 and L3 having identical geometrical construction. The index of refraction of L1 and L2 are μ1 and μ2 respectively. The upper half of the lens L3 has a refractive index μ2 (figure 18-Q3). A point object O is imaged at O1 by the lens L1 and at O2 by the lens L2 placed in same position. If L3 is placed at the same place,