1
COMEDK 2022
MCQ (Single Correct Answer)
+1
-0
A plane glass mirror of thickness 3 cm of material of $$\mu=\frac{3}{2}$$ is silvered on the black surface. When a point object is placed 9 cm from the front surface of the mirror, then the position of the brightest image from the front surface is
2
COMEDK 2021
MCQ (Single Correct Answer)
+1
-0
Two converging lenses of focal length 20 cm and 40 cm are placed in contact. The effective power of the combination is
3
COMEDK 2021
MCQ (Single Correct Answer)
+1
-0
The magnifying power of a telescope is 9. When it is adjusted for parallel rays, the distance between the objective and eyepiece is 20 cm. The focal length of lenses are
4
COMEDK 2020
MCQ (Single Correct Answer)
+1
-0
A convex lens is made of 3 layers of glass of 3 different materials as in the figure.
A point object is placed on its axis. The number of images of the object are
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