Answer to Question #27636 in Electric Circuits for Ahmed

Question

1-An object is placed in front of a converging lens at an object distance of twice the focal length of the lens. Sketch a ray diagram and compare the image and object distances. Repeat this with two more ray diagrams, using different focal lengths and still making the object distance twice the focal length. Can you draw any conclusions by comparing the object distance and the image distance?

2-A spherical concave lens has a focal length of 40 cm, and an object is placed 20 cm from the lens. Draw a ray diagram. (Submit a file with a maximum size of 1 MB.)

This answer has not been graded yet.


Estimate the image distance.
cm

Give the image characteristics.
Is it real or virtual?
real
virtual

Is it upright or inverted?
upright
inverted

Is it magnified or reduced?
magnified
reduced
same size
3-Sketch a ray diagram for a spherical convex lens with an object at Do = 2f. (Submit a file with a maximum size of 1 MB.)

This answer has not been graded yet.


Describe the image characteristics. Is it