-- Question text hereA nucleus with mass number 220 initiall... — Physics | Mockzy | Mockzy

HardPhysics

+4 / -1

-- Question text hereA nucleus with mass number 220 initially at rest emits an α-particle. If the Q-value of the reaction is 5.5 MeV, then kinetic energy of the α-particle is nearly

A

4.2 MeV

B

4.4 MeV

C

3.6 MeV

D

5.4 MeV

-- Question text hereThe difference between threshold wavelengths for two metal

-- Question text hereIn a p-n junction diode, not connected to any circuit

More from PYQ2025

Which of the following is not the unit of length :

-- The speed of light in a medium is 1.5 × 10⁸ m/s. The critical angle for this medium with respect

The frequency of an electromagnetic wave in free space is 2 MHz. When it passes through a medium of

-- In a p-type semiconductor, the majority charge carriers are

-- The energy of an electron in nth orbit of hydrogen atom is E_n = -13.6/n² eV. The energy required

-- Two magnets of magnetic moments M and 2M are placed in a vibration magnetometer, with like poles

Practice Physics Exams

Full-length mock tests with detailed analytics, rank, and percentile.