- 1(current)
Q. No.1. \(150\)
2. \(250\)
3. \(100\)
4. \(125\)
If the focal length of the objective lens is increased then the 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. |
A microscope is focused on a mark on a piece of paper and then a slab of glass of thickness 3 cm and a 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
In a compound microscope, the magnification is \(95,\) the distance of the object from the objective lens is \(\left(\dfrac{1}{3.8}\right)~\text{cm}\) and the focal length of the objective is \(\dfrac{1}{4}~\text{cm}.\) 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 of the above
- 1(current)
Q. No.
© 2025 GoodEd Technologies Pvt. Ltd.