Question

these graphs show the wavelength and amplitude of light coming from three lasers. could any of these lasers be giving off a different type of light?
laser 1:
wavelength = 8 × 10⁻⁷ m
amplitude = high
laser 2:
wavelength = 4 × 10⁻⁷ m
amplitude = high
laser 3:
wavelength = 8 × 10⁻⁷ m
amplitude = medium
yes. laser 2 could be giving off a different type of light because laser 2 has a different wavelength than lasers 1 and 3.
yes. laser 3 could be giving off a different type of light because laser 3 has a different amplitude than lasers 1 and 2.
yes. all three lasers must be giving off different types of light because every light source gives off its own type of light.
no. all three lasers must be giving off the same type of light because all three are lasers, and the same kind of light source gives off the same type of light.

Explanation:

To determine the correct answer, we analyze the properties of light: the type of light (e.g., visible, UV, etc.) is determined by wavelength (frequency), while amplitude relates to intensity (brightness). Laser 1 and 3 have wavelength \(8 \times 10^{-7}\, \text{m}\), Laser 2 has \(4 \times 10^{-7}\, \text{m}\) (different wavelength). Amplitude (intensity) does not change the type of light, so Laser 2’s different wavelength means it could emit a different type. The other options are incorrect: Laser 3’s amplitude change doesn’t affect light type, not all lasers must differ (same source can have same wavelength), and same - type sources can have same wavelength.

Answer:

Yes. Laser 2 could be giving off a different type of light because Laser 2 has a different wavelength than Lasers 1 and 3.