You produce an image of the Sun on a screen using a thin lens whose focal length is 25.6 cm. What is the diameter of the image in millimeters? (Take the radius of the Sun to be 6.96 x 108 m and its distance to Earth to be 1.50 x 1011 m.) Number Units Use correct number of significant digits; the tolerance is +/-2%
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- If a concave mirror has a focal length of 8.00 cm, how far from the mirror is the image of an object that is located 40.0 cm in front of the mirror? xi = xo. f/ (xo-f)A camera lens used for taking close-up photographs has a focal length of 28.4 mm. The farthest it can be placed from the film is 24mm. Part (a) What is the closest object that can be photographed in mm? Part (b) What is the magnification of this closest object? Part (c) What is the power of the lens?A student with normal sight is surprised to see a possum scampering up the rear wall in the Lyle theatre. The possum is 30.0 cm long and the wall is 7.1 m away. The student's eyeballs have a diameter of 2.2 cm.How big is the image of the possum on the student's retina? (Units: cm)
- At what distance away should an object be placed from a convex spherical mirror that has a focal length of -28.2 cm such that the lateral magnification of the image is 0.573? Express your numeric answer in cm.You are designing a symmetric double convex lens that is made of glass with index of refraction equal to 1.33 and has a focal length of +0.711 m. What curvature radius of the lens surface should you use (in m; answer a positive number)? Give answer in 3 sig figs and scientifc notationA person with normal vision and a reference visual range of 250 mm uses a magnifying glass with a focal length of 102 mm. What magnification does the magnifying glass provide? Enter the result as a decimal number.
- In front of a spherical concave mirror of radius 27.5 cm, you position an object of height 2.80 cm somewhere along the principal axis. The resultant image has a height of 11.20 cm. How far from the mirror is the object located? 22.4 cm 10.3 cm 17.2 cm 6.9 cmAt what distance away should an object be placed from a convex spherical mirror that has a focal length of -24.8 cm such that the lateral magnification of the image is 0.504? Express the numeric answer in cm.A transparent photographic slide is placed in front of a converging lens with a focal length of 2.53 cm. An image of the slide is formed 12.0 cm from the slide. (a) How far is the lens from the slide if the image is real? (Enter your answers from smallest to largest starting with the first answer blank. Enter NONE in any remaining answer blanks.) cm cm (b) How far is the lens from the slide if the image is virtual? (Enter your answers from smallest to largest starting with the first answer blank. Enter NONE in any remaining answer blanks.) cm cm Need Help? Master It
- Information for image 1 m_a = 4.0000E+9 kg m_m = 2.8000E+8 kg v_ai x = -1100 m/s v_mi x = 2357 m/s v_fx = -8.73841×102 m/s Information for image 2 m_1 = 1.2840E+9 kg m_2 = 2.9960E+9 kg θ_1 = 32.2 degrees θ_2 = 61.5 degrees v_1 = 2.935×103 m/s What is the value of v_2? How much energy was released in the explosion?An optician is designing a contact lens. The material has is an index of refraction of 1.45. In order to yield the prescribed focal length, the optician specifies the following dimensions: inner radius of curvature = +2.60 cm outer radius of curvature = +1.98 cm where the inner radius of curvature describes the surface that touches the eye, and the outer radius of curvature describes the surface that first interacts with incoming light. What is the focal length of this contact lens (in cm)?A concave mirror has a focal length of 39.3 cm. The distance between an object and its image is 66.8 cm. Find (a) the object and (b) image distances, assuming that the object lies beyond the center of curvature and (c) the object and (d) image distances, assuming that the object lies between the focal point and the mirror. (a) Number i (b) Number (c) Number (d) Number MI MI Mi Units Units Units Units