A building standing 100m from a pinhole camera produces on the screen of thecamera an image 5 cm high 10 cm behind the pinhole. Determine the actualheight of the building

F O R M 1 N O T E S:R E C T I L I N E A R P R O P A G A T I O N O F L I G H T Pg 716. A building standing 100m from a pinhole camera produces on the screen of thecamera an image 5 cm high 10 cm behind the pinhole. Determine the actualheight of the building. (3mk)17. A pinhole camera forms an image of size 10cm. The object is 5m tall and20m away from the pinhole. Find the length of the pinhole camera. (3mk)18. The figure below shows an object placed infront of a pinhole camera. Usingrays, show how the image is formed on the screen. (3mk)SHADOWS19. What are the conditions necessary for the occurrence of annular eclipse?.(2mk)20. State two factors affecting the type of shadow formed by an object placedinfront of a source of light. (2mks)21. Describe how a solar eclipse occurs using a well labeled diagram (3mks)22. Light from a point source falls on an object. Draw rays to show how the shadowof the object is formed on the screen and name the shadows. (3mk)23. The figure shows three point sources of light with an opaque object placedbetween them and the screen.ObjectPinhole ScreenOpaque objectLightSourceScreenOpaque objectLightSourceScreenCBADF O R M 1 N O T E S:R E C T I L I N E A R P R O P A G A T I O N O F L I G H T Pg 8State and explain the nature of shadow formed along BC. (2mks)24. When the moon comes between the sun and the earth in a straight line, aneclipse occurs. Name the eclipse. (1 mk)25. Draw a ray diagram to show the formation of a partially dark shadow and atotally dark shadow during the eclipse of the sun. (3mk)

a vertical photograph was taken with a camera of focal length f 152 mm from a flying height of 3000 m above mean ground level. Images of the top T and the base B of a tower are at 61.5 mm and 62 mmrespectively from the principal point, given that the base elevation of the tower was 1200 m above datum, calculate the height of the tower

Alice wants to take a picture of a historical building that is wide but not tall. From available references, she is able to find out that the building is 33 metres wide. She plans to take the picture standing directly in front of it, at a point perpendicular to the midpoint of the building. She is using a moderately wide-angle lens which provides an angle of coverage of 64◦. Alice sketches the situation as in Figure 7, where all lengths are measured in metres. The point A represents Alice’s position. Points B and C are at each end of the building. Point D is the midpoint of the building. The length of AB is equal to the length of AC. The angle BAD is 32◦. How far from the midpoint D should Alice stand in order to be able to take a picture of the whole building? (You can assume that the height of the building is not an issue)

From his eye, which stands 1.63 meters above the ground, Isaac measures the angle of elevation to the top of a prominent skyscraper to be 17degrees ∘ . If he is standing at a horizontal distance of 294 meters from the base of the skyscraper, what is the height of the skyscraper? Round your answer to the nearest hundredth of a meter if necessary.

A hand- made projector employs a concave mirror to project an image onto a screen. If an object with a height of 4 cm is positioned 15 cm in front of the concave mirror with focal length 10 cm, at what distance should the screen be located to capture a sharp image and also calculate the height of the image formed on the screen.30 cm and 8 cm respectively30 cm and 6 cm respectively15 cm and 8 cm respectively15 cm and 6 cm respectively