66. An electron is accelerated from rest through a potential difference of 400 V. The electron then enters a uniform magnetic field that is perpendicular to the direction of electrons. […]
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IIT JAM Biotechnology Previous Year Question paper Topic Physics
Alpha Particle and Proton with Same de Broglie Wavelength
65. An alpha particle and a proton have the same de Broglie wavelength. Which of the following is also the same for the two particles if they are moving at […]
IIT JAM Biotechnology Previous Year Question paper Topic Physics
Electron Velocity in a p-n Junction
64. In a p-n junction, the depletion region has a width of 3 × 10-7 m and the intensity of electric field in the depletion region is 106 V/m. An […]
IIT JAM Biotechnology Previous Year Question paper Topic Physics
Maximum Restoring Force in Simple Harmonic Motion
63. The time period and the amplitude of an object executing simple harmonic motion, under the restoring force of a spring, are 3.14 seconds and 0.2 m, respectively. If the […]
IIT JAM Biotechnology Previous Year Question paper Topic Physics
Fusion Reaction and Mass Number
62. Consider two nuclei with the same mass number A. For which of the following values of A, the fusion reaction is NOT possible? (A) 15 (B) 22 (C) 29 […]
![61. In a mass spectrometer, a deuteron with kinetic energy 17 MeV enters a uniform magnetic field of 2.4 T with its velocity perpendicular to the field. The deuteron moves in a circular path in the magnetic field. The radius of its path in the magnetic field (correct to two decimal places) is ____ cm. [mass of deuteron is 3.34 × l0-27 kg, 1MeV = 1.6 × 10-13 and e = 1.6 × 10-19 C]](https://www.letstalkacademy.com/wp-content/uploads/2026/07/51-11.jpg)
IIT JAM Biotechnology Previous Year Question paper Topic Physics
Radius of Circular Path of a Deuteron
61. In a mass spectrometer, a deuteron with kinetic energy 17 MeV enters a uniform magnetic field of 2.4 T with its velocity perpendicular to the field. The deuteron moves […]
IIT JAM Biotechnology Previous Year Question paper Topic Physics
X-ray Tube Operates at 30 kV
60. An X-ray tube operates at 30 kV. If one electron converts 10% of its energy into a photon at first collision, then the wavelength of the photon (correct to […]
IIT JAM Biotechnology Previous Year Question paper Topic Physics
Maximum Kinetic Energy in the Photoelectric Effect
59. Two sources P and Q produce electromagnetic waves with wavelengths Z and 2Z, respectively. Source P ejects a photon with a maximum kinetic energy of 4.0 eV from a […]
IIT JAM Biotechnology Previous Year Question paper Topic Physics
Radioactive Decay Half-Life Problem
58. One gram of radioactive nuclei with a half life of 300 days is kept in an open container. The weight of nuclei remaining after 900 days (correct to 1 […]
IIT JAM Biotechnology Previous Year Question paper Topic Physics
Effect of Dielectric on Electric Field and Capacitance of a Capacitor
57. The electric field and capacitance of a capacitor in the absence of dielectric material are E and C, respectively. When the capacitor is filled with a dielectric material, the […]
