Question
If the angular diameter of the sun is 20’, how far
from the eye a coin of radius 3.3 cm be kept to hide the sun?Solution
Arc AB = Diameter of coin = 3.3 × 2 = 6.6 cm θ = 20’ = (20/60)^° = (1/3)^° θ in radian = (1/3 × π/180)^c = (π/3)^c θ = arc/radius ⇒ π/540 = 6.6/r ∴ r = (6.6×540)/22 × 7 = 1134 cm.
The form of nitrogen that is specific to denitrification isÂ
Which insect species is the primary producer of silk through its salivary glands?
During Hybridisation in plants ,The process of removal of stamens from a flower is called:
Botanically Banana fruit is:
Which one of the following is not a physical indicator of soil?
Reserpine, a drug is extracted fromÂ
The edible part of a potato plant is the modification of which part of potato plantÂ
Which of the following is incorrectly matched?
In which dual-sector economic model is labor considered surplus in the traditional agricultural sector, leading to labor transfer to a modern industrial...
Which of the following techniques is employed to determine the nutrient status of a standing crop and involves collection and analysis of plant tissues?
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