CUET · PHYSICS · PYQ PAPER 2023
Two polaroids \( P_1 \) and \( P_2 \) are set in crossed positions. A third polaroid \( P_3 \) is placed between the two making an angle \( \alpha \) with the axis passing from the first polaroid \( P_1 \). In what orientation will the transmitted intensity be maximum?
- A \( \frac{\pi}{2} \)
- B \( \frac{\pi}{3} \)
- C \( \frac{\pi}{4} \)
- D 0
Answer & Solution
Correct Answer
(C) \( \frac{\pi}{4} \)
Step-by-step Solution
Detailed explanation
\( I_{final} = I_0 \cdot \frac{1}{2} \cdot \cos^2 \alpha \cdot \cos^2 \left( \frac{\pi}{2} - \alpha \right) \) \( I_{final} = \frac{I_0}{2} \cos^2 \alpha \sin^2 \alpha \) \( I_{final} = \frac{I_0}{8} (2 \sin \alpha \cos \alpha)^2 = \frac{I_0}{8} \sin^2(2\alpha) \) For maximum…
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
- In which of the following interference is possible?CUET 2023 Hard
- The resistivity of an iron wire is \( 10 \times 10^{-8} \, \Omega \text{ m} \). The resistance of an iron wire is \( 5 \, \Omega \). If its length as well as thickness is doubled then its resistivity will be :CUET 2023 Easy
- In a single slit diffraction experiment, first minima for \( \lambda_1 = 600 \, \text{nm} \) coincides with first maxima for wavelength \( \lambda_2 \). The value of \( \lambda_2 \) isCUET 2025 Medium
- A concave mirror of focal length 6 cm is placed at a distance 'd' from the convex lens of focal length 8 cm. A beam of light coming from infinity and falling on this convex lens-concave mirror combination returns to infinity. The distance 'd' must be equal to:CUET 2023 Hard
- In a meter bridge, the null point is found at a distance of 60 cm from end A. If a \( 5 \text{ } \Omega \) resistor is now connected in series with S, the null point occurs at 50 cm. The values of R and S are, respectively
CUET 2025 Hard - Three capacitors, C1, C2, C3 are connected in series. This combination is connected in parallel with capacitor C4. C1 = C2 = C3 = 30 \( \mu F \) and C4 = 10 \( \mu F \). Now a potential 400 V is applied across the combination. The total charge across the combination of capacitors isCUET 2025 Hard
More PYQs from CUET
- If two vectors \(\vec{a}\) and \(\vec{b}\) are such that \(|\vec{a}|=2,|\vec{b}|=3\) and \(\vec{a} \cdot \vec{b}=4\), then \(|\vec{a}-2 \vec{b}|\) is :CUET 2023 Medium
- A yellow LED of power 0.2 W emits light uniformly around it. The amplitude of the electric field of light at a distance of 2 m from the LED is:CUET 2025 Easy
- Which of the following are correct?
(A) A statistical hypothesis is a statement about the population parameter which may be true or false.
(B) In a statistical hypothesis testing procedure, a Type I error is made when the null hypothesis is accepted when it is false.
(C) In a statistical hypothesis testing procedure, a Type II error is made when the null hypothesis is rejected when it is true.
(D) The number of degrees of freedom of a statistic is the number of independent variates used to compute that statistic.
Choose the correct answer from the options given below :CUET 2025 Medium - Match List - I with List - II
Choose the correct answer from the options given below:List - I List - II (A) \(\int_{-\pi / 2}^{\pi / 2} \sin ^5 x d x\) (I) \(\pi\) (B) \(\int_{-\pi / 2}^{\pi / 2}\left(x^3+\tan ^3 x+1\right) d x\) (II) \(\frac{\pi}{12}\) (C) \(\int_0^{\pi / 2} \frac{\cos ^5 x}{\cos ^5 x+\sin ^5 x} d x\) (III) \(\frac{\pi}{4}\) (D) \(\int_1^{\sqrt{3}} \frac{d x}{1+x^2}\) (IV) 0 CUET 2023 Easy - 2-Methyl propene can be prepared by the reaction of:CUET 2023 Easy
- The number of all possible matrices of order \(2 \times 2\) with each entry \(0,1,2\), and 3 is:CUET 2023 Easy