Question

000 A T. 2-89??7x1。 7p 2.89772× 10 3 Which of the following statements is true regarding the surface temperature of a star for which the wavelength of maximum intensity falls in the visible range ?

A) must lie between 8000k and 5500k
B) must always be hotter than 3500 k

I have done the answer in the photo provided. Which answer would it be a or b
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Answer #1

From your answer provided we see that the range of wavelength of visible light is 400 nm to 700 nm.

From the lowest wavelength we get the maximum temperature of 7244.425 Kelvin and from the highest wavelength we get the minimum temperature of 4139.6714 kelvin. So, from here we see that the temperature range is from 4100 to 7200 Kelvin.

But in option in it started from 5500 k which is very greater than 4139.6714 k. So option a is wrong.

But in option b it says it is always hotter than 3500 k and we see that both temperature are greater than 3500 k. So the option b is the correct answer.

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