Teaching DSSSB TGT Mock Test 2025 Physics Optics Refraction and Reflection

The angular magnification of microscope is 400 when the final image is formed at infinity. The optical tube length is 16 cm and the focal length of objective is 5 mm. The focal length of the eye piece is

1

0.25 cm

2

1.0 cm

3

2.0 cm

4

4.0 cm

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