Day 76: MHT-CET Physics

1. A.
   $\dfrac{\pi}{3}$
2. B.
   $\dfrac{\pi}{6}$
3. C.
   $\dfrac{2\pi}{3}$
4. D.
   $\dfrac{3\pi}{2}$

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1. A.
   decrease the diameter of the objective lens.
2. B.
   decrease the focal length of the eye-piece.
3. C.
   increase the refractive index of the medium between the object and objective lens.
4. D.
   increase the wavelength of light.

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1. A.
   $\dfrac{1}{4\pi\epsilon_0}\dfrac{2q}{r}\left[\dfrac{1}{\sqrt{5}} - 1\right]$
2. B.
   $\dfrac{1}{4\pi\epsilon_0}\dfrac{q}{r}\left[\dfrac{1}{\sqrt{5}} + 1\right]$
3. C.
   $\dfrac{1}{4\pi\epsilon_0}\dfrac{2q}{r}\left[1 - \sqrt{5}\right]$
4. D.
   $\dfrac{1}{4\pi\epsilon_0}\dfrac{q}{r}\left[1 + \sqrt{5}\right]$

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1. A.
   $2\sin A$
2. B.
   $2\cos A$
3. C.
   $\dfrac{1}{2}\sin A$
4. D.
   $\dfrac{1}{2}\cos A$

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1. A.
   $1.2$ s
2. B.
   $1.4$ s
3. C.
   $1.6$ s
4. D.
   $1.8$ s

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