Make a ray diagram for an object between the focal length and the center of curvature a thin concave-concave lens. Also include a calculation of the focal length should be, using an equation.  If your image is virtual, you should plug a negative number in for the corresponding variable of the lens equation. Measure the focal length, and see whether they are similar, provide explanation

Two things lenses, each with a focal length of 20 cm arr aligned on a common axis and are separated by 30cm. A small object 3 cm long is placed on the axis, 40 cm to the left of the first lens. a) Where would the image form in relation to the first lens if thus were the only lens? b) What is the object distance to be used for the second lens? c) What is the final image distance for both lenses in relation to the second lens? D) what is the size of the final image?

When a converging lens is immersed in water, does it’s focal length increase,decrease or stay the same? Explain I am having a hard time finding this in my textbook, could you help explain this to me? Thank you.

8 a) The diagram shows two light rays that form an intermediate image by the objective lens an optical compound microscope. These rays are incident on the eyepiece lens. The focal points of the two lenses are marked. not to eyepiece lens scale objective lens to Draw rays on the diagram to show the formation of the final image. b) The object is viewed when the microscope is in normal adjustment. State what is meant by normal adjustment when applied to a compound microscope. c) The object O is placed at a distance of 24.0 mm from the objective lens and the final image is formed at a distance 240 mm from the eyepiece lens. The focal length of the objective lens is 20.0 mm and that of the eyepiece lens is 60.0 mm. The near point of the observer is at a distance of 240 mm from the eyepiece lens. Calculate the distance between the lenses.

MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A 1.0 cm-tall object stands in front of a converging lens. It is desired that a virtual image 2.0 times larger than the object be formed by the lens. How far from the lens (in cm) must the object be placed to accomplish this task, if the final image is located 10 cm from the lens? cm Need Help? Read It

I need help with this question I can ask more questions to finish the other parts.

An object (height=10 cm) is viewed through a diverging lens (f=10.7 cm). Determine the type of the image when the object is held away from the lens. do= 35 cm be the answer real,inverted and smaller Music off Zoom in Show ll ce OrderRecelpt.pdf * Judicial review Ljog MacBook Air