Physics · Optics, Nature of Light and Optical Instruments
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Platinum wire becomes yellow at a temperature of ________ degree C.
- A
900
- B
500
- C
1300
- D
1600
Correct option is C.
On heating the black platinum wire, temperature increases and thus the peak wavelength decreases because of which the color of the wire changes from red (λ=700 nm) to yellow at 1300°C.
This option is incorrect because it is an incorrect value of temperature change.
This option is incorrect because it is an incorrect value of temperature change.
This option is correct because it is correct value of temperature change.
On heating the black platinum wire, temperature increases and thus the peak wavelength decreases because of which the color of the wire changes from red (λ=700 nm) to yellow at 1300°C.
This option is incorrect because it is an incorrect value of temperature change.
Tagged under Physics · Optics, Nature of Light and Optical Instruments · 2021