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Author Question: The objective lens and the eyepiece of a microscope have focal lengths of 4.0 mm and 25 mm, ... (Read 180 times)

moongchi

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on: Jul 29, 2018
The objective lens and the eyepiece of a microscope have focal lengths of 4.0 mm and 25 mm, respectively.
 
  The objective produces a real image 30 times the size of the object, with the final image viewed at infinity. The near point of the microscope user is at 25 cm. What is the magnitude of the overall magnification of the microscope?
  A) 250
  B) 300
  C) 350
  D) 400
  E) 450

Question 2

A circular coil of copper wire is lying flat on a horizontal table. A bar magnet is held above the center of the coil with its south pole downward. The magnet is released from rest and falls toward the coil.
 
  As viewed from above, what is the direction of the current induced in the coil as the magnet approaches the coil? A) counterclockwise
  B) clockwise
  C) No current is induced in the coil.
  D) An emf but no current is induced in the coil.
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Galvarado142

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Reply #1 on: Jul 29, 2018
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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moongchi

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Reply 2 on: Jul 29, 2018
:D TYSM

ghepp

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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