A) red
B) green
C) yellow
D) white
Correct Answer: A
Solution :
According to Wiens displacement law, \[{{\lambda }_{m}}T=\]constant. When we begin to heat the substance, initially temperature is small, so\[{{\lambda }_{m}}\] will be large. In visible region, wavelength is maximum for red colour. So, initial colour will be red.
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