Which of the following sentences describes the electric and magnetic field components of an electromagnetic wave? Select one: O a. The electric and magnetic fields are perpendicular to the direction of wave propagation. O b. The electric field is perpendicular to the wave propagation and the magnetic field is parallel to the direction of wave propagation. O c. The electric and magnetic fields are parallel to the direction of the wave propagation. O d. The electric field is parallel to the wave propagation and the magnetic field is perpendicular to the wave propagation Clear my choice a) If electromagnetic radiation has a wavelength of 6.8 x 10"/m, then the period of this electromagnetic radiation expressed in scientific notation is a.b x 10"s. Record your 4 digit response for a,b, c , and d in the space below; no decimals or commas, please :) b) The type of electromagnetic radiation from part a) is A. microwave B. visible C. radio D. ultraviolet Record your response in the space belowUse the following information to answer the next question. In a Michelson-type experiment, the path followed by a beam of light when the 8-sided mirror is at rest is as shown below. The detector indicates a maximum signal. As the 8-sided mirror begins to rotate, the beam of light no longer follows this path, and the detector indicates a decreased signal. Light source Stationary Path of Light Beam Mirror 35.0 km 8-sided rotating mirror Light detector Note: This diagram is not drawn to scale. Once the 8-sided mirror is rotating, the frequency of rotation for which the detector will first indicate a maximum signal is Select one: O a. 5.36 x 102 revolutions per second O b. 1.07 x 103 revolutions per second O c. 4.29 x 10' revolutions per second O d. 8.57 x 104 revolutions per secondUse the following information to answer the next question An object that is 100 cm tall is placed 35 cm in front of a particular mirror, its real image in the mirror is inverted and 45 cm tall. The mirror is / ,and the object's image is located _ii away from the mirror. The statement above is completed by Select one: O a. i = convex, li = 16 cm O b. i = convex, i/ = 78 cm O c. i = concave, li = 16 cm O d. i = concave, li = 78 cm Use the diagram below to answer the following question. 2 F Which of the following descriptions describes the image formed by the blue object and lens. Select one: O a. real, inverted, larger than the object, opposite side of the lens to the object O b. real, inverted, smaller than the object, opposite side of the lens to the object. O c. imaginary, upright, smaller than the object, same side of the lens as the object. O d. no image is formed. Visible light that has a wavelength of 6.50 x 10"m in air, is directed into obsidian. The index of refraction of obsidian 1.76. The wavelength of this light inside the obsidian expressed in scientific notation, is a.bc x 10" m. Record a, b and c in the space belowLight travelling through glass into air experiences an increase in speed. Air has a refractive index i _ than glass so the light ray will bend _ii the normal. Select one: O a. i = greater; ii = toward O b. i = greater; ii = away from O c. i = less; ii = toward O d. i = less; li = away from At what distance above this page would a convex magnifying lens that has a focal length of 10.0 cm have to be held for the image of the letters to appear upright and 2.5 times as tall? Select one: O a. 8.00 cm O b. 4.00 cm O c. 16.0 cm O d. 12.5 cm Use the following information to answer the next question. Light from a source passes through a glass prism and the following spectrum is observed. The prism separates the colours because Select one: O a. different wavelengths refract to different angles O b. different wavelengths diffract to different angles O c. there is no change in frequency in refraction O d. there is no change in frequency in diffraction