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A light beam traveling through a transparent medium of index of refraction n₁ passes through a thick transparent slab with parallel faces and index of refraction n₂. Show that the emerging beam is parallel to the incident beam.
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أبريل 25
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A light beam traveling through a transparent medium of index of refraction n₁ passes through a thick transparent slab with parallel faces and index of refraction n₂. Show that the emerging beam is parallel to the incident beam.
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Problems A laser beam is incident at an angle of 30° from the vertical onto a solution of corn syrup in water. If the beam is refracted to 19.24° from the vertical, (a) what is the index of refraction of the syrup solution? Suppose the light is red, with vacuum wavelength 632.8 nm. Find its (b) wavelength, (c) frequency, and (d) speed in the solution.
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أبريل 25
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Choose the best answer Part (1) The electron energy given by the equations: 1- a- -22/8 Σοκ. 6- -²/πεοι. C- - 22/8 περι d- -22/8 π.Σο 2- In Compton scatter the change in wave length is Aλ. a- (1-cosp). mc b- mic (1-cos). C h -(1-cos). m d- (1-cos). C The wave equation of motion given: 3- a- y = Asin 2n (kx-wt). b- Asin 2 (wt-kx). c-y Asin (kx-wt). d-Y Asin (wt-kx). 4- The refraction index of medium is constant that: a- n= v/c. b- n = c/v. c-nf/c. d- n=f/v.3. A 6.0-cm object is placed 30.0 cm from a lens. The resulting image height has a magnitude of 2.0 cm; and the image is inverted. What is the focal length of the lens3. A 6.0-cm object is placed 30.0 cm from a lens. The resulting image height has a magnitude of 2.0 cm; and the image is inverted. What is the focal length of the lensChoose
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أبريل 27
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The wavelength of red helium-neon laser light in air is 632.8 nm. (a) What is its frequency? (b) What is its wavelength in glass that has an index of refraction of 1.5? (c) What is its speed in the glass?
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أبريل 25
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Bacteriophages that can enter into stable/long-term relationships with their hosts are called (b) defective phages Most types of virus particles show Creutzfeldt-Jakob disease (CJD) is caused by (b) retrovirus (c) virulent phages (d) temperate phages symmetries The first step in infection of host plant cells by a virus is (a) lytic phages (a) complex and helical (b) complex and bilateral (c) bilateral and helical (d) icosahedral and helical (a) viroid (c) prion (d) DNA virus (a) Attachment (b) assembly (c) penetration In order for a virus to replicate, (a) the capsid must contain the envelope (d) release (b) the host cell must be undergoing mitosis (c) the genome must be released in the cytoplasm (d) the host cell must lack a cell membrane (a) lysogeny When a virus enters a cell
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مايو 27
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Bacteriophages that can enter into stable/long-term relationships with their hosts are called (b) defective phages Most types of virus particles show Creutzfeldt-Jakob disease (CJD) is caused by (b) retrovirus (c) virulent phages (d) temperate phages symmetries The first step in infection of host plant cells by a virus is (a) lytic phages (a) complex and helical (b) complex and bilateral (c) bilateral and helical (d) icosahedral and helical (a) viroid (c) prion (d) DNA virus (a) Attachment (b) assembly (c) penetration In order for a virus to replicate, (a) the capsid must contain the envelope (d) release (b) the host cell must be undergoing mitosis (c) the genome must be released in the cytoplasm (d) the host cell must lack a cell membrane (a) lysogeny When a virus enters a cell
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مايو 27
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