Question

The Rolle's theorem is applicable in the interval $ \alpha =\frac{\gamma }{3}=\frac{6\times {{10}^{-5}}}{3}=2\times {{10}^{-5}}{{/}^{o}}c $ for the function

• A. $ I=4{{I}_{0}}{{\cos }^{2}}(\phi /2) $
• B. $ \Rightarrow $
• C. $ \phi =2\pi /3 $
• D. $ \Delta x\times (2\pi /\lambda )=2\pi /3 $

Answer 1

Answer: (B)

Let $ f(x)={{x}^{2}} $ $ \therefore $ $ f(1)=f(-1)=1 $ Also, f(x) is continuous and differentiable in the given interval.