A nucleus has mass number α and radius Rα. Another nucleus has mass number β and radius Rβ. If β = 8α then Rα / Rβ is :
A nucleus has mass number alpha and radius R alpha another nucleus has mass number beta Q. A nucleus has […]
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Match List – I with List – II. List – I A. Coefficient of viscosity B. Surface tension C. Pressure D. Surface energy List – II I. [ M L⁻¹ T⁻² ] II. [ M L² T⁻² ] III. [ M L⁰ T⁻² ] IV. [ M L⁻¹ T⁻¹ ]
Match List I with List II for physical quantities and dimensions Q. Match List – I with List – II.
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Identify the correct statements : A. Electrostatic field lines form closed loops. B. The electric field lines point radially outward when charge is greater than zero. C. The Gauss-Law is valid only for inverse-square force. D. The work done in moving a charged particle in a static electric field around a closed path is zero. E. The motion of a particle under Coulomb’s force must take place in a plane.
Identify the correct statements related to electrostatics Q. Identify the correct statements : A. Electrostatic field lines form closed loops.
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Q. Identify the correct statements : A. Effective capacitance of a series combination of capacitors is always smaller than the smallest capacitance of the capacitor in the combination. B. When a dielectric medium is placed between the charged plates of a capacitor, displacement of charges cannot occur due to insulation property of dielectric. C. Increasing of area of capacitor plate or decreasing of thickness of dielectric is an alternate method to increase the capacitance. D. For a point charge, concentric spherical shells centered at the location of the charge are equipotential surfaces.
Identify the correct statements related to capacitors and electrostatics Q. Identify the correct statements : A. Effective capacitance of a
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A plane electromagnetic wave is moving in free space with velocity c = 3 × 10⁸ m/s and its electric field is given as � V/m, where � is the unit vector along y-axis. The magnetic field vector � of the wave is :
A plane electromagnetic wave is moving in free space with velocity c and its electric field is given as Q.
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A small block of mass m slides down from the top of a frictionless inclined surface, while the inclined plane is moving towards left with constant acceleration a₀. The angle between the inclined plane and ground is θ and its base length is L. Assuming that initially the small block is at the top of the inclined plane, the time it takes to reach the lowest point of the inclined plane is ________.
Time taken by a block to slide down a frictionless inclined plane moving with constant acceleration Q. A small block
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When the position vector � changes sign as �, which one of the following vector will not flip under sign change?
When the position vector r = xi + yj + zk changes sign as −r, which one of the following
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The speed of a longitudinal wave in a metallic bar is 400 m/s. If the density and Young’s modulus of the bar material are increased by 0.5% and 1%, respectively then the speed of the wave is changed approximately to ______ m/s.
The speed of a longitudinal wave in a metallic bar is 400 m/s. If the density and Young’s modulus of
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A long cylindrical conductor with large cross section carries an electric current distributed uniformly over its cross-section. Magnetic field due to this current is:
A long cylindrical conductor with large cross section carries an electric current distributed uniformly over its cross-section Q. A long
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The time period of a simple harmonic oscillator is �. Measured value of mass (m) of the object is 10 g with an accuracy of 10 mg and time for 50 oscillations of the spring is found to be 60 s using a watch of 2 s resolution. Percentage error in determination of spring constant (k) is ______ %.
Percentage error in determination of spring constant of a simple harmonic oscillator Q. The time period of a simple harmonic