Day 545: JEE Mains Physics

1. A.
   $hv$
2. B.
   $hv\left( 1 - \frac{hv}{2mc^{2}} \right)$
3. C.
   $hv\left( 1 + \frac{hv}{2mc^{2}} \right)$
4. D.
   zero

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1. A.
   (A)-(IV), (B)-(I), (C)-(III), (D)-(II)
2. B.
   (A)-(IV), (B)-(II), (C)-(III), (D)-(I)
3. C.
   (A)-(II), (B)-(I), (C)-(IV), (D)-(III)
4. D.
   (A)-(III), (B)-(II), (C)-(IV), (D)-(I)

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1. A.
   polyatomic only
2. B.
   monoatomic only
3. C.
   either monoatomic or diatomic
4. D.
   diatomic only.

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1. A.
   $20\text{ }N$
2. B.
   $10\text{ }N$
3. C.
   $15\text{ }N$
4. D.
   $25\text{ }N$

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

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