Question

if a=t=0 and r=1 what is the object called as​

Answer 1

Explanation:

Solution to 3. is there a linear transformation t : r 3 → r 2 such that t(1, −1, 1) = (1, 0) and t(1, 1, 1) = (0, 1)

Answer 2

The object is called a perfect reflector.

Radiation:

• Radiation is a method of heat transfer from point A to point B without the use of any medium.
• Eg. The Sun's heat reaches the Earth through radiation.

Reflection, Absorption, and Emission

• When heat radiation is incident on a surface some of it gets reflected, some gets absorbed and the rest gets emitted.
• If a denotes the absorptive power, t denotes the transmission power and r denotes the reflective power then:

        a + r + t = 1

• When a=t=0 and r=1, the object acts as a perfect reflector
• When t=r=0 and a=1, the object acts as a perfect black body.