If the focal length of the objective lens is increased then magnifying power of:

1. microscope will increase but that of the telescope
    decrease.

2. microscope and telescope both will increase.

3. microscope and telescope both will decrease.

4. microscope will decrease but that of the telescope
    will increase.

Subtopic:  Simple & Compound Microscope |
To view explanation, please take trial in the course below.
NEET 2023 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2023 - Target Batch - Aryan Raj Singh
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A microscope is focussed on a mark on a piece of paper and then a slab of a glass of thickness 3 cm and refractive index 1.5 is placed over the mark. How should the microscope be moved to get the mark in focus again?

1. 1 cm upward

2. 4.5 cm downward

3. 1 cm downward

4. 2 cm upward

Subtopic:  Simple & Compound Microscope |
To view explanation, please take trial in the course below.
NEET 2023 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2023 - Target Batch - Aryan Raj Singh
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology

In a compound microscope, the magnification is 95, the distance of the object from the objective lens is 1/3.8 cm and the focal length of the objective is 1/4 cm. What is the magnification of the eyepiece when the final image is formed at the least distance of distinct vision?
1. 5
2. 10
3. 100
4. None

Subtopic:  Simple & Compound Microscope |
To view explanation, please take trial in the course below.
NEET 2023 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2023 - Target Batch - Aryan Raj Singh
Please attempt this question first.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology