An object is located between the focal point f and twice f at the of a convergin

Question

An object is located between the focal point f and twice f at the of a converging lens made from glass (n = 1.5), as shown in the figure. 22. The image is located A) Between A and B B) Between B and the lens C) Between the lens and C D) Between C and D E) To the right of D 23. The image is A) Upright and Real B) Upright and Virtual C) Inverted and Real D) Inverted and Virtual E) Virtual and Real 24. What is the equivalent resistance for the circuit to the right? Assume all of the resistors have the same resistance. A) 7R/3 B) 2R/3 C) 3R/2 D) 5R/7 E) R/5

Explanation / Answer

22) when object is placed between f and 2f then image formed between 2f and infinity

so the image formed between D and infinity that is the image is located to the right of D so option E correct

23) the image is real,inverted ,enlarged so option c correct

24) from circuit diagram at the of circuit three resistors are in parellel then resultant of these three is Rp=R/n=R/3

then this Rp and remaining two are in series then total resultant is Reff=R+R+R/3=7R/3

so option A correct

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