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Hello MAJORINE! Task One: Methods of producing a magnet Here are different methods to produce a magnet: Single Touch Method: This involves rubbing a piece of magnetic material (like steel) with one pole of a permanent magnet, always in the same direction. Double Touch Method: In this method, two permanent magnets are used to stroke a piece of magnetic material. The magnets are stroked from the center outwards towards the ends, with opposite poles touching the material. Electrical Method (Electromagnetism): This method involves passing an electric current through a coil of wire wound around a ferromagnetic core. Induction Method: This involves placing a magnetic material near a strong magnet. The material will become temporarily magnetized by induction. Task Two: We are given two mirrors: a concave mirror and a convex mirror, both with a focal length of 20 cm. A person of height 4 cm is standing 25 cm away from each mirror. a) Which mirror forms a bigger image? Given Data: Object height, h_o = 4 cm Object distance, u = 25 cm Focal length of concave mirror, f_c = +20 cm Focal length of convex mirror, f_x = -20 cm (for a convex mirror, f is negative) Step 1: Calculate the image distance (v) and image height (h_i) for the concave mirror. We use the mirror formula: (1)/(f) = (1)/(v) + (1)/(u) (1)/(20) = (1)/(v_c) + (1)/(25) (1)/(v_c) = (1)/(20) - (1)/(25) = (5-4)/(100) = (1)/(100) v_c = 100 cm Magnification, M = -(v)/(u) = (h_i)/(h_o) M_c = -(100)/(25) = -4 Image height, h_ic = M_c × h_o = -4 × 4 cm = -16 cm The magnitude of the image size is 16 cm. The negative sign indicates an inverted image. Step 2: Calculate the image distance (v) and image height (h_i) for the convex mirror. We use the mirror formula: (1)/(f) = (1)/(v) + (1)/(u) (1)/(-20) = (1)/(v_x) + (1)/(25) (1)/(v_x) = -(1)/(20) - (1)/(25) = (-5-4)/(100) = (-9)/(100) v_x = -(100)/(9) cm ≈ -11.11 cm Magnification, M = -(v)/(u) = (h_i)/(h_o) M_x = -((-100/9))/(25) = (100)/(9 × 25) = (4)/(9) Image height, h_ix = M_x × h_o = (4)/(9) × 4 cm = (16)/(9) cm ≈ 1.78 cm The magnitude of the image size is approximately 1.78 cm. The positive sign indicates an upright image. Step 3: Compare the image heights. The image height from the concave mirror is 16 cm. The image height from the convex mirror is 1.78 cm. Conclusion: The mirror that forms a bigger image is the concave mirror. The concave mirror forms a bigger image. b) Write a brief report about the nature of the image formed by each mirror and advise which mirror is suitable for use as a driving mirror. Step 1: Characteristics of the image formed by a concave mirror. For an object placed 25 cm from a concave mirror with f = 20 cm (i.e., the object is between F and C): The image is real*. The image is inverted*. The image is magnified*. The image is formed in front of the mirror, beyond the center of curvature (C). Step 2: Characteristics of the image formed by a convex mirror. For any real object placed in front of a convex mirror: The image is virtual*. The image is erect* (upright). The image is diminished* (smaller). The image is formed behind the mirror, between the pole and the focus. Step 3: Advice on which mirror is suitable for use as a driving mirror. A driving mirror needs to provide a wide field of view and form erect images so that objects appear in their correct orientation. Concave mirrors form inverted images when the object is far from the focus, which is unsuitable for driving. They also have a narrow field of view. Convex mirrors always form erect, diminished, and virtual images, and they provide a much wider field of view*. This allows the driver to see a larger area behind the vehicle. Therefore, a convex mirror is more suitable for use as a driving mirror. A convex mirror is more suitable for use as a driving mirror. 3 done, 2 left today. You're making progress.