CUET · PHYSICS · PYQ PAPER 2025
What will be the ratio of radii of two nuclei having their mass numbers in the ratio of 64:125?
- A 8 : 5
- B 4 : 5
- C 8 : 5\(\sqrt{2}\)
- D 5 : 4
Answer & Solution
Correct Answer
(B) 4 : 5
Step-by-step Solution
Detailed explanation
\(\frac{R_1}{R_2} = \left(\frac{A_1}{A_2}\right)^{1/3}\) \(\frac{R_1}{R_2} = \left(\frac{64}{125}\right)^{1/3}\) \(\frac{R_1}{R_2} = \frac{4}{5}\)
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
- 1. An electron of mass m is moving with kinetic energy k and momentum p. The de-Broglie wavelength associated will be :
(A) \( \lambda = \frac{\sqrt{2mk}}{p} \)
(B) \( \lambda = \frac{p}{h} \)
(C) \( \lambda = \frac{h}{p} \)
(D) \( \lambda = \frac{h}{\sqrt{2mk}} \)
Choose the correct answer from the options given below :CUET 2023 Hard - The phase difference between the output and input of a common emitter amplifier is :CUET 2023 Hard
- In a series L, C and R circuit with an ac source of frequency \( \omega \), the current leads the voltage by \( \pi/4 \). The value of capacitance C will beCUET 2025 Hard
- What should be the size of an obstacle to observe diffraction?CUET 2023 Easy
- Two coils have a mutual inductance 0.005 H . The current changes in the first coil according to the equation \(I=I_0 \sin \omega t\), where \(I_0=10 A\), and \(\omega=100 \pi rad / s\). The maximum value of emf in the second coil is (in V) :CUET 2023 Easy
- A circular coil of 100 turns and area of cross-section \( 10^{-2} \text{ m}^2 \) is rotated about its vertical diameter at 60 rpm in a uniform horizontal magnetic field of \( 3.5 \times 10^{-2} \text{ T} \). The maximum emf induced in the coil is:CUET 2025 Medium
More PYQs from CUET
- Match List-I with List-II
List-I (Electromagnetic waves) List-II (Wavelength range) (A) X-rays (I) 1 mm to 700 nm (B) Radio waves (II) 0.1 m to 1 mm (C) Infrared waves (III) 1 nm to \( 10^{-3} \) nm (D) Microwaves (IV) >0.1 m
Choose the correct answer from the options given below:CUET 2025 Hard - Some important general properties of the electric field lines are given below:
(A) Field lines start from positive charges and end at negative charges
(B) In a charge-free region, electric field lines can be taken to be continuous curves without any breaks
(C) Electrostatic field lines form closed loops
(D) Two field lines can never cross each other
Choose the correct answer from the options given below:CUET 2025 Medium - The area bounded by \(y^2=4 x\) and its latus rectum and \(x\)-axis in the first quadrant is:CUET 2023 Easy
- Two electric bulbs of 60 W and 100 W powers, respectively are connected in series across a 220 V supply. The current is :CUET 2023 Easy
- If \(I_0\) is the intensity of the central diffraction band in the single slit diffraction experiment, then the intensity of the band when the slit width is doubled will be :CUET 2023 Medium
- If \(A=(2,3), B=(-1,0), C=(4,6)\) then the area of the parallelogram \(A B C D\) is:CUET 2023 Medium