NCERT Solutions for Class 11 Science Properties of matter 1
Important Board Questions
Dimension and Measurement
NCERT Books for Session 2022-2023
CBSE Board and UP Board
Numerical And Long Questions
When the planet Jupiter is at a distance of 824.7 million km from the earth, its angular diameter is measured to be 35.72′′ of arc. Calculate diameter of Jupiter.
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θ = 35.72′′
1′′ = 4.85 × 10⁻⁶ radian ⇒ 35.72′′ = 35.72 × 4.85 ×10⁻⁶ rad.
d = DQ = 824.7 × 35.72 × 4.85 × 10⁻⁶
= 1.4287 × 10⁵ km