CUET · PHYSICS · PYQ PAPER 2025
The focal length of a lens depends on
- A The radii of curvature of its surfaces and the refractive index of the lens with respect to surrounding medium.
- B Only the radii of curvature of its surface and the absolute refractive index of its material.
- C Only the radii of curvature of its surface and the refractive index of the surrounding medium.
- D Only the radii of curvature of its surface.
Answer & Solution
Correct Answer
(A) The radii of curvature of its surfaces and the refractive index of the lens with respect to surrounding medium.
Step-by-step Solution
Detailed explanation
A) The radii of curvature of its surfaces and the refractive index of the lens with respect to surrounding medium. According to the Lens Maker's Formula, \(\frac{1}{f}=\left(\frac{n_2}{n_1}-1\right)\left(\frac{1}{R_1}-\left(\frac{1}{R_2}\right)\right)\) , focal length depends on…
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
- If the mass of a proton is \( m_p = 1.007825 \text{ u} \) and the mass of the neutron is \( m_n = 1.008665 \text{ u} \), the mass defect in the formation of \( {}_{3}^{7}\text{Li} \) nucleus is: (take the mass of Lithium nucleus as \( M_{Li} = 7.000000 \text{ u} \))CUET 2025 Easy
- A resistor, a capacitor and an inductor are joined in series with an alternating current source. If the frequency of the source is slightly increased from a very low value, then :CUET 2023 Hard
- Which of the following is NOT correct in the case of the output obtained from a full wave rectifier?CUET 2025 Easy
- A cell of e.m.f 4V and internal resistance \(0.2 \Omega\) is connected to \(1.8 \Omega\) external resistance. The potential difference across the terminal of the cell will be:CUET 2023 Medium
- The de-Broglie wavelength associated with a ball of mass \( m = 150 \, g \) traveling at \( v = 30.0 \, m/s \) would beCUET 2025 Medium
- In a pair of adjacent coils, if current in one coil changes from 0 A to 10 A in 0.25 s, causing a magnetic flux change of 15 Wb in the adjacent coil, the mutual inductance of the coils is :CUET 2024 Medium
More PYQs from CUET
- If the maximum value of the function \(f(x)=\frac{2 \log _e x}{x}, x>0\) occurs at \(x=e\), then \(e^3 f^{\prime \prime}(e)\) is equal toCUET 2025 Hard
- An inorganic salt taken in a test tube was mixed with freshly prepared ferrous sulphate solution.
Concentrated sulphuric acid was then added along the walls of the test tube.
Predict the formula of the compound formed :CUET 2023 Hard - Which of the following statement is \text{\textbf\{incorrect\}?}CUET 2023 Hard
- A biconvex lens has radii of curvature of 10 cm each. If the refractive index of the material of the lens is 1.5, what will be its focal length in air ?CUET 2025 Hard
- The matrix \(X\) in the equation \(A X=B\), such that \(A=\left[\begin{array}{ll}1 & 3 \\ 0 & 2\end{array}\right]\) and \(B=\left[\begin{array}{cc}1 & -1 \\ 0 & 2\end{array}\right]\) is given byCUET 2025 Medium
- If \(A\) and \(B\) are matrices of same order, then ( \(A B^{ T }-B A^{ T }\) ) is always:CUET 2025 Medium