Physics · Ray Optics
A Cassegrain telescope uses two mirrors: a concave primary mirror with a radius of curvature of 25 cm and a convex secondary mirror with a radius of curvature of 16 cm. If the two mirrors are separated by a distance of 2.5 cm, the position of the final image of an object at infinity is located at:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 140 cm from the concave mirror
- 24.44 cm from the convex mirror
- 34.44 cm from the concave mirror
- 440 cm from the convex mirror✓
Correct answer
40 cm from the convex mirror
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