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Q: What is the sign of the focal length for a diverging lens?
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A 2cm tall object is placed perpendicular to the principal axis of a convex lens of focal length 10cmThe distance of the object from the lens is 15cm Find the position nature and height of the imag?

An image formed by a convex lens is described by the lens equation 1/u+1/v=1/f, where u is the distance of the object from the lens, v is the mage distance from lens and f is the focal length of the mirror. The question states that f=10cm and u=15cm, This can be substituted in the lens equation as follows: 1/15+1/v=1/10 1/v =1/30 V=+30 Magnification =v/u =30/15=2. The positive sign of v means the image is real, inverted and it on the opposite side of the object. Solution: The image is twice the same size as the object, real, inverted and on the opposite of the object.


Is lens formula valid only for convex lens?

I believe it can be used for any lens. Just be sure to use the correct sign. Check the "lensmaker's equation" in Wikipedia, and the comments about what sign to use.


The length of a sign is 4 inches more than the width The area is 45 square inches Identify the length and width of the sign?

9 and 5


If the length of a sign is 4 inches more thqn the width and the area is 45 square inches what is the length and width of the sign?

9" x 5"


Do you have to put the square or cubic sign after inches and centimeters?

You have to put the square sign when you use area and the cubic sign when you use volume. Area= Length times Width Volume= Length times Width times Height


What is a sign that has 6 sides two sides are the same length which polygon bast describes the sign?

hexagon


What is the sign for lines of equal length?

Parallel. looks like this: =


How do you sign long in sign language?

Starting at about the wrist, the pointed index finger moves up the length of the arm.


8 sided figure of equal length?

An Octagon. ( see a stop sign ).


If a square sign has an area of approximately 158 feet What is the approximate length of one side of the sign?

Seeing as the area = 158 = the length of 1 side squared. One side = the square root of 158 = about 12.5698 feet


How many words can you make out of single?

sin sling lien singe leg(s) I in gin sing gel lens sign(s)


What are the length and width of a rectangular traffic sign of the length exceeds the width by 6 inches and the perimeter is 164 inches?

38 x 44