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A black body is at a temperature of 2880 K. The energy of radiation emitted by this object with wavelength between 499 nm and 500 nm is U₁, between 999 nm and 1000 nm is U₂ and between 1499 nm and 1500 nm is U₃. The Wien constant

. Then
(a) U₁ = 0
(b) U₃ = 0
(c) U₁>U₂
(d) U₂>U₁

Chemistry

(Fill in the blank)
The more …………………. the standard reduction potential, the ………………………… is its ability to displace hydrogen from acids.

Mathematics

If a, b are the roots of x²-10cx-11d = 0 and c, d are the roots of x²-10ax-11b=0, then find the value of a+b+c+d. (a, b, c, d are distinct numbers).

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