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Author Question: A magnifying glass produces an angular magnification of 7. What is the focal length of this lens if ... (Read 71 times)

pragya sharda

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on: Jul 29, 2018
A magnifying glass produces an angular magnification of 7. What is the focal length of this lens if a person whose near point is 28 cm reads a book using this magnifying glass?
 
  A)
 
  2 cm
  B)
 
  3 cm
  C)
 
  4 cm
  D)
 
  5 cm
  E)
 
  6 cm

Question 2

An element with atomic number 6 undergoes - decay. Its atomic number is now
 
  A)
 
  7.
  B)
 
  6.
  C)
 
  5.
  D)
 
  3.
  E)
 
  2.


Expo

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Reply #1 on: Jul 29, 2018
Answer to Question 1

C

Answer to Question 2

A


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