True or false: The photopic system is most sensitive at 507 nm. The scotopic system is most sensitive at 555 nm.

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Multiple Choice

True or false: The photopic system is most sensitive at 507 nm. The scotopic system is most sensitive at 555 nm.

Explanation:
Under bright light, cones drive vision and are most sensitive around 555 nm, in the green region. Under low light, rods drive vision and are most sensitive near 507 nm, also green-blue. The statement swaps these peaks, saying photopic sensitivity is at 507 nm and scotopic at 555 nm, which is not correct. So the claim is false—the photopic peak is about 555 nm, and the scotopic peak is about 507 nm.

Under bright light, cones drive vision and are most sensitive around 555 nm, in the green region. Under low light, rods drive vision and are most sensitive near 507 nm, also green-blue. The statement swaps these peaks, saying photopic sensitivity is at 507 nm and scotopic at 555 nm, which is not correct. So the claim is false—the photopic peak is about 555 nm, and the scotopic peak is about 507 nm.

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