Make the curvature radius 0.6 m, the refractive index 1.5, and the diameter 0.6

Question

Make the curvature radius 0.6 m, the refractive index 1.5, and the diameter 0.6 m. Place the lamp so that the source of light is 120 cm from the middle of the lens (use the ruler).
The focal length of the lens is ____________, and the focal plane is ___________ from the lens.
Make the curvature radius 0.6 , the refractive index 1.5, and the diameter 0.6 . Place the lamp so that the source of light is 120  from the middle of the lens (use the ruler).
The focal length of the lens is ____________, and the focal plane is ___________ from the lens.
    120 cm / 120 cm
    60 cm / 120 cm
    60 cm / 60 cm
    30 cm / 120 cm
    60 cm / 180 cm

Explanation / Answer

60cm/120cm

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