A converging lens has a focal length of 5 cm. An object forms a virtual image, which is located at 12 cm to the right of the lens. The image height is [hi] cm. What is the object height (unit in cm)? Express the answer as a positive quantity. [Hint: is the image upright or inverted?]  

You need to use a [f]-cm-focal-length lens to produce an inverted image twice the height of an object. At what distance from the object should the lens be placed (unit in cm)?

A lens with f = +[f1] cm is in contact with a lens with f = -20 cm. What is the focal length of the combination (unit in cm)?

You combine two thin lenses by placing them in contact so that their axes coincide, forming what is called a compound lens. The focal lengths of the lenses are 30 cm and −50 cm, respectively. If an object is [ho] cm tall and d1 = [d1] cm, what is the height of the image (unit in cm)? Express the answer as a positive quantity.

 A slide projector needs to create a 98-cm-high image of a 2.0-cm-tall slide. The screen is [d] cm from the slide. What focal length does the lens need (unit in cm)? Assume that it is a thin lens. [Hint: the image is real or virtual?]  

A very thin oil film (n = [n2]) floats on water (n = 1.33). What is the thinnest film that produces a strong reflection for a wavelength of [lamda] nm? Express your answer in nm.

In a double‑slit interference experiment, the wavelength is λ=700 nm, the slit separation is [d] mm, and the screen is [L] m away from the slits. What is the linear distance between the ninth order maximum and the third order maximum on the screen? Express your answer in mm.

A diffraction grating with [N] slits/mm is illuminated by light that gives a first-order diffraction angle of [theta1]o. What is the wavelength of the light? Express your answer in nm.

We have learned about a lot this semester. Tell me, what was your favorite jazz genre we listened to during this class? What did you like about it? Find a song from this genre that we did not discuss in the course and add a link to it at the end of your response

Trassign normally occurs under which of the following conditions?