enEnglishguગુજરાતી
GUJCET · Physics · Ray Optics and Optical Instruments
If in compound microscope objective with focal length 1.0 cm, eyepiece with focal length 2.0 cm, tube length of 20 cm and near point for an observer is 25 cm. Then value of magnification of compound microscope will be ___________.
- A 2.5
- B 250
- C 25
- D 2500
Answer & Solution
Correct Answer
(B) 250
Step-by-step Solution
Detailed explanation
\(M = \frac{L}{f_o} \times \frac{D}{f_e}\) \(M = \frac{20}{1.0} \times \frac{25}{2.0}\)
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from Physics
- Is the focal length of a lens for red and violet light rays respectively are \(f_{\mathrm{R}}\) and \(f_{\mathrm{V}}\), then which of the following is true relationship ?GUJCET 2016 Medium
- One moving electron when comes closer to other stationary electron, then its kinetic energy and potential energy respectively _______ and ________ .GUJCET 2015 Easy
- An alternating voltage given as \(\mathbf{V}=100 \sqrt{2} \sin 100 t\) Volt is applied to a capacitor of \(1 \mu \mathrm{~F}\). The current reading of the ammeter will be equal to ____________ mA .GUJCET 2015 Hard
- How will you connect four capacitors, each of capacitance \(4 \mu F\) for having equivalent capacitance \(1.6 \mu F\) ?GUJCET 2022 Medium
- The radius of the inner most electron orbit of a hydrogen atom is \(5.3 \times 10^{-11} \mathrm{~m}\) .What is the radius of the \(n=4\) state ?GUJCET 2021 Easy
- Magnetic flux of \(10 \mu W b\) is linked with a coil, when a current of 2 mA flows through it. What is the self inductance of the coil ?GUJCET 2011 Easy
More PYQs from GUJCET
- In an AC circuit, a resistance of \(\mathbf{R}\) ohm is connected in series with an inductor of self inductance \(L\). If phase angle between voltage and current be \(45^{\circ}\), the value of inductive reactance \(\left(X_{L}\right)\) will be equal to ____________ .GUJCET 2008 Easy
- Match the reactions given in Column - I names given in Column - II.
GUJCET 2024 Easy - The relation between the intensity of the electric field of an electric dipole at a distance \('r'\) from its centre on its axis and the distance \('r'\) is _________. (where \(r \gg 2 a)\)GUJCET 2010 Easy
- In an AC generator, induced \(\operatorname{emf} \varepsilon=0\) at \(t =0\), then its value ___________ .GUJCET 2025 Medium
- ___________ nucleotide is not present in RNA.GUJCET 2025 Easy
- Double convex lenses are to be manufactured from a glass of refractive index 1.55 with both bases of the same radius of curvature. What is the radius of curvature required if the focal length is to be 20 cm ?GUJCET 2022 Medium