Three exoplanets emit approximate blackbody spectra with peak wavelengths ,

PHYSICS · Single correct · CBSE · Physics · Thermal Properties of Matter · Thermal Properties of Matter

Problem

Three exoplanets emit approximate blackbody spectra with peak wavelengths

\lambda_P=12\,\mu\text{m}

\lambda_Q=8\,\mu\text{m}

, and

\lambda_R=16\,\mu\text{m}

. Which ordering lists the planets from hottest to coldest? (a)

Q \;>\; R \;>\; P

(b)

R \;>\; P \;>\; Q

(c)

Q \;>\; P \;>\; R

(d)

P \;>\; Q \;>\; R