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JEE Advanced
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Magnifying power of a simple microscope is (when final image is formed at D=25 cm from eye)

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Important Questions on Geometric Optics

HARD
JEE Advanced
IMPORTANT
Complete Study Pack for Engineering Entrances Objective Physics Vol 2>Chapter 7 - Geometric Optics>Objective Problems [Level 1]>Q 142
The length of the compound microscope is 14 cm. The magnifying power for relaxed eye is 25. If the focal length of eye lens is 5 cm, then the object distance for objective lens will be
MEDIUM
JEE Advanced
IMPORTANT
Complete Study Pack for Engineering Entrances Objective Physics Vol 2>Chapter 7 - Geometric Optics>Objective Problems [Level 1]>Q 143
If the focal length of objective and eye lens are 1.2 cm and 3 cm respectively and the object is put 1.25 cm away from the objective lens and the final image is formed at infinity. The magnifying power of the microscope is
HARD
JEE Advanced
IMPORTANT
Complete Study Pack for Engineering Entrances Objective Physics Vol 2>Chapter 7 - Geometric Optics>Objective Problems [Level 1]>Q 144
The focal length of objective and eye lens of a microscope are 4 cm and 8 cm respectively. If the least distance of distinct vision is 24 cm and object distance is 4.5 cm from the objective lens, then the magnifying power of the microscope will be
MEDIUM
JEE Advanced
IMPORTANT
Complete Study Pack for Engineering Entrances Objective Physics Vol 2>Chapter 7 - Geometric Optics>Objective Problems [Level 1]>Q 145
The magnifying power of a microscope with an objective of 5 mm focal length is 400. The length of its tube is 20 cm. Then the focal length of the eye piece is
MEDIUM
JEE Advanced
IMPORTANT
Complete Study Pack for Engineering Entrances Objective Physics Vol 2>Chapter 7 - Geometric Optics>Objective Problems [Level 1]>Q 146
The length of the tube of a microscope is 10 cm. The focal lengths of the objective and eye lenses are 0.5 cm and 1.0 cm. The magnifying power of the microscope is about
EASY
JEE Advanced
IMPORTANT
Complete Study Pack for Engineering Entrances Objective Physics Vol 2>Chapter 7 - Geometric Optics>Objective Problems [Level 1]>Q 147
In a compound microscope, the intermediate image is
EASY
JEE Advanced
IMPORTANT
Complete Study Pack for Engineering Entrances Objective Physics Vol 2>Chapter 7 - Geometric Optics>Objective Problems [Level 1]>Q 148
If F∘ and Fe are the focal lengths of the objective and eye piece respectively of a terrestrial telescope, then its magnifying power will be
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JEE Advanced
IMPORTANT
Complete Study Pack for Engineering Entrances Objective Physics Vol 2>Chapter 7 - Geometric Optics>Objective Problems [Level 1]>Q 149
If the telescope is reversed i.e. seen from the objective side