Consider a 1-m wide parabolic trough reflector with a 1-cm inside diameter pipe filled with oil at its focus. If all of the solar radiation is converted into heat, estimate the time required at midday on a sunny day to raise the temperature of the oil from $20 ^ { \circ } \mathrm { C }$ to $100 ^ { \circ } \mathrm { C }$.

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The Answer of Consider a 1-m wide parabolic trough reflector with a 1-cm inside diameter pipe filled with oil at its focus. If all of the solar radiation is converted into heat, estimate the time required at midday on a sunny day to raise the temperature of the oil from $20 ^ { \circ } \mathrm { C }$ to $100 ^ { \circ } \mathrm { C }$.

Consider a 1-M Wide Parabolic Trough Reflector with a 1-Cm 20∘C20 ^ { \circ } \mathrm { C }20∘C

Consider a 1-M Wide Parabolic Trough Reflector with a 1-Cm $20 ^ { \circ } \mathrm { C }$