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Suppose that the lower half of the concave mirror’s reflecting surface in Fig. is covered with an opaque (non-reflective) material. What effect will this have on the image of an object placed in front of the

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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A mobile phone lies along the principal axis of a concave mirror, as shown in Fig. . Show by suitable diagram, the formation of its image. Explain why the magnification is not uniform. Will the distortion of image depend on the location of the phone with respect to the

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Find the position, nature,and magnification of the image. An object is placed at 10

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Find the position, nature,and magnification of the image. An object is placed at 5 cm in front of a concave mirror of radius of curvature 15

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Suppose while sitting in a parked car, you notice a jogger approaching towards you in the side view mirror of R = 2 m. If the jogger is running at a speed of 5 m s–1, how fast the image of the jogger appear to move when the jogger is

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Suppose while sitting in a parked car, you notice a jogger approaching towards you in the side view mirror of R = 2 m. If the jogger is running at a speed of 5 m s–1, how fast the image of the jogger appear to move when the jogger is

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Suppose while sitting in a parked car, you notice a jogger approaching towards you in the side view mirror of R = 2 m. If the jogger is running at a speed of 5 m s–1, how fast the image of the jogger appear to move when the jogger is

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Suppose while sitting in a parked car, you notice a jogger approaching towards you in the side view mirror of R = 2 m. If the jogger is running at a speed of 5 m s–1, how fast the image of the jogger appear to move when the jogger is

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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The earth takes 24 h to rotate once about its axis. How much time does the sun take to shift by 1º when viewed from the

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Light from a point source in air falls on a spherical glass surface (n = 1.5 and radius of curvature = 20 cm). The distance of the light source from the glass surface is 100 cm. At what position the image is

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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A magician during a show makes a glass lens with n = 1.47 disappear in a trough of liquid. What is the refractive index of the liquid? Could the liquid be

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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If f = 0.5 m for a glass lens, what is the power of the

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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The radii of curvature of the faces of a double convex lens are 10 cm and 15 cm. Its focal length is 12 cm. What is the refractive index of

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A convex lens has 20 cm focal length in air. What is focal length in water? (Refractive index of air-water = 1.33, refractive index for air-glass =

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Find the position of the image formed by the lens combination given in the Fig.

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What focal length should the reading spectacles have for a person for whom the least distance of distinct vision is 50

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The far point of a myopic person is 80 cm in front of the eye. What is the power of the lens required to enable him to see very distant objects

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In what way does the corrective lens help the above person? Does the lens magnify very distant objects? Explain

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The above person prefers to remove his spectacles while reading a book. Explain

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The near point of a hypermetropic person is 75 cm from the eye. What is the power of the lens required to enable the person to read clearly a book held at 25 cm from the

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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