2in1. A diverging lens ( 4.00 [cm]) and a converging lens ( 5.00 [cm] ) are placed 5.00 [cm] apart and an object is placed 15.0 [cm] on the left side of the diverging lens as shown. Where is the final image formed?

Physics 72 beach episode. A sea star at the bottom of a clear, shallow sea ( 1.33) appears to be 5.5 [ft] deep. What is its actual depth?

Christmas ka ba? Kasi I wanna merry you. A Christmas globe with radius 5.00 [cm] and made of glass with refractive index 1.57 has a small Christmas tree inside it, located 2.00 [cm] from the globe's surface. What is the apparent distance of the Christmas tree when viewed from the right side of the globe?

Po Ka Ep! A minion 18.0 [cm] tall is standing 320.0 [mm] from a thin lens. The lens forms the minion’s image at 70.0 [mm] on the same side as the minion itself. What is the focal length magnitude of this lens, and what is its type?

Lamok ka ba? Kasi mis-na-quita. A Jurassic mosquito is discovered embedded in a chunk of amber ( = 1.60). One surface of the amber is spherically concave with respect to the observer, with a radius of curvature of 4.00 [cm] (see figure). The mosquito head appears to be buried at 4.00 [cm] from from the air-amber interface. Where is the actual location of the mosquito head with respect to the interface?

Major in ray tracing. Consider a concave spherical mirror with center of curvature and focal point as shown. A dog is placed at point . Where will the image form? 

Saan ka man... An object is located 10.0 [cm] in front of a concave mirror whose radius of curvature has a magnitude of 60.0 [cm]. Where is the image located?

Anong size mo? Consider an object located 4.00 [cm] in front of a convex mirror whose radius of curvature has a magnitude of 24.0 [cm]. How big is the image relative to the object, and what is its orientation?

Ellipse candy. Consider an EM wave with electric field vector components with phase difference and amplitude relationships shown below. Which of the following is/are elliptically polarized light (but not circularly polarized)?

Path of Remembrance. Mem is floating 30.0 [cm] in front of a plane vertical mirror. Where is Mem's image and what is its orientation?