What Have I Learned So Far? 1. Consider a flat coil with 40 loops of wire and has a radius of 10 mm. This coil was placed in a magnetic field of 0.30 T to enable a maximum amount of flux to flow through it. Later on, the coil rotated in 0.05 s to a position wherein no flux can go through it. Compute the average induced EMF between the terminals of the coil.2. A flat coil with 900 loops is pulled between magnetic poles in 0.10 s. What is the average EMF induced in the coil if it intercepts a flux of 3.2 x 10-4 Wb and reduces it to 1.3 x 10-4 Wb? HIVID swin\\VIlid in oliedew nwoT 3. Suppose there is a coil with 70 loops and has a radius of 10 mm. This coil will be placed in a magnetic field of 0.70 T to enable a maximum flux to go through it. It later rotated in 0.02 s to a position that no flux can go through it. Solve for the average EMF induced between the terminals of the coil. gent bris svilleog boxh nismos esmelled bar alboWhat Have I Learned So Far? The objective lens and the eyepiece lens of a compound microscope have focal lengths of +0.5 cm and +2 cm, respectively. Assume that the microscope will be used to focus on an object that is 0.50 cm away from the objective lens. What is the magnifying power of the microscope if the virtual image is viewed by the eye at a distance of 20 cm?What Have I Learned So Far? 1. An astronomical telescope has an objective lens with a focal length of +80 cm. How much should the eyepiece be moved to focus this telescope on an object that is 50 m away. 2. The magnifying power of a refracting telescope is 300 when adjusted for minimum eyestrain. If its eyepiece has a focal length of +2 cm, what must be the focal length of its objective lens? 3. Consider the refracting telescope from the previous item. How far must the eyepiece lens and the objective lens be to project a real image of a distant object on a screen that is 20 cm from the eyepiece lens?What Have I Learned So Far? 1. The critical angle of light passing from rock salt to the air is 39.01. Find the index of refraction of the rock salt. 2. Solve for the critical angle when the light passes from benzene and then to air. (Benzene has a refractive index of 1.12.) 3. Solve for the critical angle between diamond and ordinary glass. Consider the absolute indices of refraction of a diamond and an ordinary piece of glass to be ~ and respectively.What Have I Learned So Far? 1. Consider the core of a solenoid that generates a flux of 5 x 104 Wb. Removing the core generated a flux of 3 x 10-7 Wb in the solenoid with the same amount of current. What is the relative permeability of the core? 2. A 70-cm solenoid is wound 5 000 times around an aluminum rod with a radius of 0.50 cm. Calculate the flux in the solenoid if a 3-A current is supplied to it. (The relative permeability of aluminum is 250.)What Have I Learned So Far? 1. Where a body should be placed with respect to a concave mirror with a radius of 20 cm to form a real image that is one-third the size of the body? 2. A convex mirror produces an image that is one-sixth the size of an object that is located 10 cm in front of it. What is the focal length of the mirror? 3. The moon has a diameter of 3 500 km and approximately 384 000 km apart from Earth. Find the position and diameter of the image of the moon on a shiny sphere that has a diameter of 20 cm.What Have I Learned So Far? 1. Mark is a farsighted person who can see objects clearly only if they are at least 50 cm away from him. Find the focal length and the power of the corrective lens that will enable him to read his book at a distance of 20 cm. 2. Anna, a nearsighted person, cannot clearly see objects that are more than 50 cm from her eye. What are the focal length and the lens power of the glasses that will enable her to see distant objects clearly?What Have I Learned So Far? 1. Consider a converging lens with a focal length of 50 cm that forms a real image that is 3 times larger than the actual object. Determine the distance of the object from its image. 2. Suppose you have a double convex lens with faces radii of 20 cm and 15 cm. When you place an object 30 cm from the lens, a real image is formed 30 cm from the lens. What is the refractive index of the lens? 3. The refractive index of a certain glass lens is 1.50 and its focal length is +10 cm. Find its focal length in water with a refractive index of 1.43. 4. The focal lengths of two thin lenses are +5 cm and -7 cm. What is their combined focal length if they are placed in contact with each other?What Have I Learned So Far? 1. The index of refraction of pool water is ~ . Find the apparent depth of a 50-m deep 3 pool of water when viewed vertically through air. 2. A container has a layer of benzene (n = 1.65) that is 3 cm thick, which is floating on water (n = 1.33) that is 5 cm deep. What is the apparent distance of the bottom of the container from the upper surface of benzene when viewed vertically through air? 3. Find the actual inclination of a straight iron rod that is partially immersed in water if the submerged portion seems to be inclined 30 with the surface when viewed vertically through air. The index of refraction of water is 1.33.What Have I Learned So Far? sbarn et bionslee gral mo-08 Ad 1. Suppose you have an induced EMF of 10 V existing in a coil. If the current in the coil changes at a rate of 40 A/s, what is the coil's self-inductance? Se EO.0 2. What is the self-inductance of a coil with 450 turns if a steady current of 4.0 A generates a flux of 2.1 x 10-3 Wb in it? OW 3. A solenoid with a 30-cm iron core has a cross-sectional area of 2.0 cm2. The wire is wound around the core 10 times per cm of its length. Solve for the self-inductance of the solenoid if the relative permeability of iron is 500.What Have I Learned So Far? 1. Determine the refractive index of a certain piece of glass if the speed of light in it is 1.90 x 108 m/s. 2. Benzene has a refractive index of 1.43. Suppose a light ray strikes its surface at an angle of 40, what is the directions of the reflected and the refracted rays? 3. Consider an aluminum stick partially immersed in water, which has a refractive index of 1.33. The submerged portion of the stick seems to be inclined at 50 with respect to the surface when viewed vertically. What is the actual inclination of the stick