Day 60: JEE Mains Physics

1. A.
   behaves as concave lens if $\left| f_{\text{convex~}} \right| > \left| f_{\text{concave~}} \right|$
2. B.
   behaves as concave lens if $\left| f_{\text{convex~}} \right| < \left| f_{\text{concave~}} \right|$
3. C.
   behaves as convex lens if $\left| f_{\text{convex~}} \right| > \left| f_{\text{concave~}} \right|$
4. D.
   Focal length of the lens system will change if the position of two lenses are interchanged

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

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1. A.
   $1:2$
2. B.
   $2:5$
3. C.
   $5:2$
4. D.
   $5:4$

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