Lenses ** A symmetric glass lens of index 1.40 has a focal length of -8.00 cm in air. A plastic bag having the same shape as the glass lens is filled with pressurized air, forming an "air lens" to be used underwater. Find its focal length.
Lenses ** A symmetric glass lens of index 1.40 has a focal length of -8.00 cm in air. A plastic bag having the same shape as the glass lens is filled with pressurized air, forming an "air lens" to be used underwater. Find its focal length.
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Transcribed Image Text:Lenses **
A symmetric glass lens of index 1.40 has a focal length of -8.00 cm in air. A
plastic bag having the same shape as the glass lens is filled with pressurized air,
forming an "air lens" to be used underwater. Find its focal length.
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