If the binding energy of the nucleon in ₃⁷Li and ₂⁴He nuclei are 5.60 MeV and 7.06 MeV respectively, then in the reaction: p+₃⁷Li→2 ₂⁴He, energy of proton must be
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(a) 39.2 […]
When ₃Li⁷ nuclei are bombarded by protons, and the resultant nuclei are ₄Be⁸, the emitted particles will be
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(a) neutrons (b) alpha particles (c) beta particles (d) gamma photons
Correct Answer:
gamma photons
In an AC generator, a coil with N turns, all of the same area A and total resistance R, rotates with frequency ω in a magnetic field B. The maximum value of emf generated in […]
In a series resonant LCR circuit, the voltage across R is 100 volts and R =1kΩ with C= 2 μF. The resonant frequency ω is 200 rad/s. At resonance the voltage across L is
The potential energy of a 1 kg particle free to move along the x-axis is given by V(x)={x⁴/4-x²/2}J. The total mechanical energy of the particle 2 J. Then, the maximum speed (in m/s) is
Four point masses, each of value m, are placed at the corners of a square ABCD of side l. The moment of inertia of this system about an axis through A and parallel to BD […]
A particle of mass 100 g is thrown vertically upwards with a speed of 5 m/s. The work done by the force of gravity during the time the particle goes up is
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If the terminal speed of a sphere of gold (density=19.5 kg/m³) is 0.2 m/s in a viscous liquid (density=1.5 kg/m³) find the terminal speed of a sphere of silver (density 10.5 kg/m³) of the same […]
The maximum velocity of a particle, executing simple harmonic motion with an amplitude 7 mm, is 4.4 m/s. The period of oscillation is
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(a) 100 s (b) 0.01 s (c) 10 s […]
A bomb of mass 16 kg at rest explodes into two pieces of masses of 4 kg and 12 kg. The velocity of the 12 kg mass is 4 ms⁻¹. The kinetic energy of the […]
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