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12th Odisha Board
IMPORTANT
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With a simple microscope,if the final image is located at the least distance of distinct vision, (i.e. D ) from the eye placed close to the lens, then the magnifying power is

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Important Questions on Eye and Optical Instruments

EASY
12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 13 - Eye and Optical Instruments>MODEL QUESTIONS>Q 3
For distinct vision/normal vision, eye is focussed on an object at
EASY
12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 13 - Eye and Optical Instruments>MODEL QUESTIONS>Q 4
A myopic patient uses
MEDIUM
12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 13 - Eye and Optical Instruments>MODEL QUESTIONS>Q 5
A presbyopic patient can see objects only when they lie between 50 cm and 200 cm from the eye. Then the focal length of the correcting lens required while reading is 
MEDIUM
12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 13 - Eye and Optical Instruments>MODEL QUESTIONS>Q 6
A presbyopic patient can see objects only when they lie between 50 cm and 200 cm from the eye. The focal length of the correcting lens for seeing distant objects is
EASY
12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 13 - Eye and Optical Instruments>MODEL QUESTIONS>Q 7
The ratio of focal length of the objective to the focal length of the eyepiece is greater than 1 for a
EASY
12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 13 - Eye and Optical Instruments>MODEL QUESTIONS>Q 8
The focal length of the lens in the human eye is maximum when it is looking at an object at
EASY
12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 13 - Eye and Optical Instruments>MODEL QUESTIONS>Q 9
With a simple microscope, if the final image is located at infinity, then it's magnifying power is
EASY
12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 13 - Eye and Optical Instruments>MODEL QUESTIONS>Q 10
An observer looks at a tree of height 15 m with a telescope of magnifying power 10. To him the tree appears