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Physics - Wave on String Question with Solution | TestHub

PhysicsWave on StringWavesHard2 minQB

PhysicsHardsingle choice

Two stars $X$ and $Y$ have temperatures $T_{X} < T_{Y}$ . Both recede from earth, and the observed peak-emission wavelength is the same for both. Then:

Options:

Answer:

Solution:

The cooler star $X$ has the longer intrinsic $λ_{m}$ , so it needs a smaller red shift to reach the common observed wavelength. The hotter star $Y$ needs a larger shift, so $v_{Y} > v_{X}$ .

Stream:JEESubject:PhysicsTopic:Wave on StringSubtopic:Waves

⏱ 2mℹ️ Source: QB

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