The radiation force on the roof is (a) 3.05 ×10^-5 N (b) 4.07 ×10^-6 N (c) 2.67 ×10^-4 N (d)

step 1 We are given that the electromagnetic flux delivered by the Sun is 10 to the power 3 watt per me

The radiation force on the roof is (a) 3.05 ×10^-5 N (b)...

The radiation force on the roof is (a) $3.05 \times 10^{-5} \mathrm{~N}$ (b) $4.07 \times 10^{-6} \mathrm{~N}$ (c) $2.67 \times 10^{-4} \mathrm{~N}$ (d) $6.00 \times 10^{-5} \mathrm{~N}$ (a) $1-\mathrm{A}, \mathrm{II}-\mathrm{B}, \mathbb{I I I}-\mathrm{C}, \mathrm{IV}-\mathrm{D}$ (b) $1-D, 11-C, I I I-B, I V-A$ (c) $1-D, H-B, 1 \|-A, I V-C$ (d) $1-\mathrm{C}, \mathrm{I} \mathrm{A}-\mathrm{A}, \mathrm{II}-\mathrm{B}, \mathrm{IV}-\mathrm{D}$

The radiation force on the roof is
(a) $3.05 \times 10^{-5} \mathrm{~N}$
(b) $4.07 \times 10^{-6} \mathrm{~N}$
(c) $2.67 \times 10^{-4} \mathrm{~N}$
(d) $6.00 \times 10^{-5} \mathrm{~N}$
(a) $1-\mathrm{A}, \mathrm{II}-\mathrm{B}, \mathbb{I I I}-\mathrm{C}, \mathrm{IV}-\mathrm{D}$
(b) $1-D, 11-C, I I I-B, I V-A$
(c) $1-D, H-B, 1 \|-A, I V-C$
(d) $1-\mathrm{C}, \mathrm{I} \mathrm{A}-\mathrm{A}, \mathrm{II}-\mathrm{B}, \mathrm{IV}-\mathrm{D}$

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Key Concepts

Radiation Pressure

Radiation pressure is the force exerted per unit area by electromagnetic radiation as a result of the momentum carried by photons. This concept relates the energy flux of the radiation to the pressure that it exerts when absorbed or reflected, typically expressed as I/c for perfect absorption.

Photon Momentum

Photon momentum is the quantifiable momentum that electromagnetic radiation carries, despite photons having no mass. This momentum is transferred to surfaces during absorption or reflection, leading to measurable forces such as radiation pressure.

Intensity and Energy Flux

Intensity, or energy flux, refers to the power per unit area carried by electromagnetic radiation. This measure is crucial because the amount of force exerted on a surface by the radiation is directly related to the intensity of the incident radiation.

Force Calculation from Pressure

The force due to radiation is obtained by multiplying the radiation pressure by the area over which the radiation is incident. This basic principle connects the microscopic transfer of photon momentum to the macroscopic observable force on an object, such as a roof.

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