Day 108: MHT-CET Physics

1. A.
   $2$
2. B.
   $\sqrt{2}$
3. C.
   $\frac{1}{2}$
4. D.
   $\frac{1}{\sqrt{2}}$

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1. A.
   Reducing the separation between the slits.
2. B.
   Using blue light instead of green light.
3. C.
   Using red light instead of green light.
4. D.
   Moving the screen away from the slits.

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1. A.
   $\dfrac{L_2}{L_1}$
2. B.
   $\dfrac{L_1}{L_2}$
3. C.
   $\dfrac{L_1}{(L_1 + L_2)^2}$
4. D.
   $\dfrac{L_2}{(L_1 + L_2)^2}$

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1. A.
   It has low permeability
2. B.
   It has high coercivity
3. C.
   It has high retentivity
4. D.
   It has low retentivity

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1. A.
   decrease continuously until the sphere is empty.
2. B.
   first increase and then decrease to the original value.
3. C.
   remain constant throughout.
4. D.
   increase continuously until the sphere is empty.

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