24) A transparent photographic slide is placed in front of a converging lens with a focal length of 2.60 cm The lens forms an image of the slide 14.0 cm from the lens. How far is the lens from the slide if the image is a) real, and b) virtual?

Describe the appearance of the object through the convex lens. Specify whether the image was larger or smaller than the object and whether it was right side up or upside down. Answer in 2 to 3 sentences

130) A converging lens has a focal length of 10.0 cm. Locate the object if a real image is located at a distance from the lens of (a) 20.0 cm and (b) 50.0 cm. What If? Redo the calculations if the images are virtual and located at a distance from the lens of (c) 20.0 cm and (d) 50.0 cm. 131) A diverging lens has a focal length of magnitude 20.0 cm. (a) Locate the image for object distances of (i) 40.0 cm, (ii) 20.0 cm, and (ii) 10.0 cm. For each case, state whether the image is (b) real or virtual and (c) upright or inverted. (d) For each case, find the magnification. 132) (a) Three resistors are connected in parallel as shown in Figure 6. A potential difference of 18.0 V is maintained between points a and b. (1 ) Find the current in each resistor. (2) Calculate the power delivered to each resistor and the total power delivered to the combination of resistors. 18.0 VT 3.00 0 6.00 0 9.00 a Figure 6 (b) Find the currents I, l2 , and la in the circuit shown in Figure 7 following the steps…

6) An object is placed very far in front of a converging lens of focal length 13.2 cm. Find the location of the image, be sure to indicate which side of the lens the image is on.

A 1.00-cm-high object is placed 3.95 cm to the left of a converging lens of focal length 8.30 cm. A diverging lens of focal length -16.00 cm is 6.00 cm to the right of the converging lens. Find the position and height of the final image. position height cm cm -Select- -Select- Is the image real or virtual? O real O virtual in front of the second lens behind the second lens Is the image inverted or upright? O upright O inverted 4

10. A thin converging lens is found to form an image of a distant building 24 cm from the lens. If an insect is now placed 16 cm from this lens, how far FROM THE INSECT will its image be formed?

7) Both lenses of a compound microscope have focal lengths of 1 cm. The barrel length is 26.95 cm. Deteimine the total magnification for an object placed 1.04 cn below the objective,

1) A piece of thin spherical shell that has a radius of curvature of 145 cm is silvered on both sides. The concave side of the piece forms a real image 500 cm from the mirror. The piece is then turned around so that its convex side faces the object. The piece is moved so that the image is now 30 cm from the piece on the concave side.

16) An object is placed 12.3 cm from a diverging lens of focal length 18.9 cm. What is the lateral magnification of the object?

a) Show that an infinitesimal change dn of the refractive index of the material of a thin lens leads to an infinitesimal change df of the focal distance, i.e., show that: df f dn n-na (1) where na is the refractive index of air. 1.530) using a discrete b) Calculate the focal distance of a thin lens for blue light (with n= version of the upper equation if the focal distance for red light (with n = 1.470) is 20.0 cm (na = 1.000).