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AIIMS 201826 May
Exam
AIIMS
Year
2018
Date
26 May
Subject
Physics
Chapter
Gravitation

AIIMS 2018 · 26 May · Physics · Gravitation

Earth orbiting satellite has solar energy collecting panel with...

Earth orbiting satellite has solar energy collecting panel with total area 5 m25 \mathrm{~m}^2. If solar radiations are perpendicular and completely absorbed, the average force associated with the radiation pressure is

Options

  1. A2.33×10−3 N2.33 \times 10^{-3} \mathrm{~N}
  2. B2.33×10−4 N2.33 \times 10^{-4} \mathrm{~N}
  3. C2.33×10−5 N2.33 \times 10^{-5} \mathrm{~N}
  4. D2.33×10−6 N2.33 \times 10^{-6} \mathrm{~N}

Correct answer

C. 2.33×10−5 N2.33 \times 10^{-5} \mathrm{~N}

Step-by-step solution

 As, power = solar constant × area =(1.4×103)×5W\begin{aligned} \text{ As, power } & =\text{ solar constant } \times \text{ area } \\ & =\left(1.4 \times 10^3\right) \times 5 \mathrm{ W}\end{aligned}∴ Force = solar constant × area  speed of  light =1.4×103×53×108=2.33×10−5N\begin{aligned} \therefore \quad \text{ Force } & =\frac{\text{ solar constant } \times \text{ area }}{\text{ speed\text{ of } light }} \\ & =\frac{1.4 \times 10^3 \times 5}{3 \times 10^8}=2.33 \times 10^{-5} \mathrm{ N}\end{aligned}$
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