Q19 1. If two stars peak at the same wavelength but have different peak intensit
ID: 288995 • Letter: Q
Question
Q19 1. If two stars peak at the same wavelength but have different peak intensities, what can you say is true?
a. They have the same temperature
b. They have the same radius
c. They have the same luminosity
d. a and c are both true e. b and c are both true
2. If two star peak at different wavelengths, but have the same peak intensities, what can you say is true?
They have the same temperature
They have the same radius
They have the same luminosity
a and b are both true
a and c are both true
a.They have the same temperature
b.They have the same radius
c.They have the same luminosity
d.a and b are both true
e.a and c are both true
Explanation / Answer
D. Both A and C are true. Because if peak wavelength of two stars are same means temperature of the stars are also similiar, based on the peak wavelength only the temperature of stars are assumed. luminosity depends on the size and temperature of the star. if size varies luminosity also varies but one star having double the radius of the other but the temperature is less when compared to the small one, then both having similiar luminosity. for example star A size 500km with temperature 100degree and the other star is 250km but temprature is 200degree means then both having same luminosity.
B. Both stars having same radius because intesity of an object helps to know about the diameter of an object. Same intensity mostly results in same size
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