Using the expression 2d sin θ = λ , one calculates the values of d by measuring the corresponding angles θ in the range 0 to 90º. The wavelength λ is exactly knowns and the error in θ is constant for all values of θ . As θ increases from 0º :
Text Solution
Verified by ExpertsThe correct answer is:
D
Sol. 2d sin θ = λ
d = 
differntiate
∂ = 
(cosec θ )
∂ = 
∂ = 
as θ = increases , 
decreases
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