Day 360: MHT-CET Physics

1. A.
   $n_{1} = n_{2}$
2. B.
   $n_{1} = 2n_{2}$
3. C.
   $2n_{1} = n_{2}$
4. D.
   $3n_{1} = 4n_{2}$

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1. A.
   $1 : 1$
2. B.
   $2 : 1$
3. C.
   $4 : 1$
4. D.
   $8 : 1$

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

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1. A.
   $\dfrac{\sigma r^2T^4}{R^2}$
2. B.
   $\dfrac{\sigma r^2T^4}{4\pi R^2}$
3. C.
   $\dfrac{\sigma r^4T^4}{R^4}$
4. D.
   $\dfrac{4\pi\sigma r^2T^4}{R^2}$

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1. A.
   for process A to B, heat is lost and internal energy increases.
2. B.
   for process B to C, heat is lost and internal energy increases.
3. C.
   for process C to D, heat is gained and internal energy increases.
4. D.
   for process D to A, heat is gained and internal energy increases.

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