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12th Uttar Pradesh Board
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According to the diagram if the readings of travelling microscope are respectively a, b and c then refractive index μ  of the slab is –

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Important Questions on Ray Optics and Optical Instruments

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12th Uttar Pradesh Board
IMPORTANT
Physics Crash Course (Based on Revised Syllabus-2023)>Chapter 9 - Ray Optics and Optical Instruments>Exercise>Q 32
The lateral deviation/shift produced by a glass slab does not depend on which of the following factor?
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12th Uttar Pradesh Board
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Physics Crash Course (Based on Revised Syllabus-2023)>Chapter 9 - Ray Optics and Optical Instruments>Exercise>Q 33
Find the expression for lateral shift in glass slab

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12th Uttar Pradesh Board
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Physics Crash Course (Based on Revised Syllabus-2023)>Chapter 9 - Ray Optics and Optical Instruments>Exercise>Q 34
Find the refractive index of the material, if a prism having an angle A = 600 which produces a minimum deviation of 300?
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12th Uttar Pradesh Board
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Physics Crash Course (Based on Revised Syllabus-2023)>Chapter 9 - Ray Optics and Optical Instruments>Exercise>Q 35
A fish rising vertically up towards the surface of water with speed 3 m s-1 observes a bird diving vertically down towards it with speed 9 m s-1. The actual velocity of bird is
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12th Uttar Pradesh Board
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Physics Crash Course (Based on Revised Syllabus-2023)>Chapter 9 - Ray Optics and Optical Instruments>Exercise>Q 36
A tank is filled with water to a height of 12.5 cm. The apparent depth of a needle lying at the bottom of the tank is measured by a microscope to be 9.4 cm. What is the refractive index of water? If water is replaced by a liquid of refractive index 1.63 up to the same height, by what distance would the microscope have to be moved to focus on the needle again?
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12th Uttar Pradesh Board
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Physics Crash Course (Based on Revised Syllabus-2023)>Chapter 9 - Ray Optics and Optical Instruments>Exercise>Q 37
What is refractive index?
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12th Uttar Pradesh Board
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Physics Crash Course (Based on Revised Syllabus-2023)>Chapter 9 - Ray Optics and Optical Instruments>Exercise>Q 38
A glass slab of thickness 2.5 cm having refractive index 5/3 is kept on ink spot. A transparent beaker of very thin bottom containing water of refractive index 4/3 up to 8 cm is kept on the glass block. calculate apparent depth of the ink spot when seen from the outside air . 
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12th Uttar Pradesh Board
IMPORTANT
Physics Crash Course (Based on Revised Syllabus-2023)>Chapter 9 - Ray Optics and Optical Instruments>Exercise>Q 39
Red light of wavelength 6400 A∘ in air has wavelength 4000 A∘ in glass. If the wavelength of violet light in air is 4400 A∘, what is its wavelength in glass? (Hint: Assume that μr and μv are approximately equal)