Physics NEB 2082 (MCQs) question paper

Group A

Multiple Choice Questions(11 × 1 = 11)

1. 1.

   What is the difference between moment of inertia of a rod about an axis passing through its one end and through its centre perpendicular to its length ? a) $\frac{M{L}^2}{3}$ b) $\frac{M{L}^2}{4}$ c) $\frac{M{L}^2}{6}$ d) $\frac{M{L}^2}{12}$

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2. 2.

   For an oscillating object, the displacement versus time curve shown in figure. What is the velocity of the object in the mean position ? [figure in the original paper] a) $0.2\pi \text{m/s}$ b) $0.4\pi \text{m/s}$ c) $2\pi \text{m/s}$ d) $4\pi \text{m/s}$

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3. 3.

   Two spherical rain drops of equal size are falling vertically downward with terminal ` velocity of $0.15\text{m/s}$. What would be the terminal velocity if these drops were combined to form a larger drop ? a) $0.15\text{ m/s}$ b) $0.24\text{ m/s}$ c) $0.31\text{ m/s}$ d) $0.48\text{ m/s}$

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4. 4.

   What happens in an adiabatic process ? a) Volume remains constant b) Pressure remains constant c) Temperature remains constant d) The system is insulated from the surroundings

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5. 5.

   The efficiency of Carnot engine operating between steam point and ice point is a) $26.8\%$ b) $50\%$ c) $73.2\%$ d) $100\%$

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6. 6.

   Which of the following is an example of transverse wave ? a) Sound wave in air b) Waves inside the water c) Wave produced in the stem of vibrating tuning fork d) Wave produced in the stretched string

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7. 7.

   Which one of the following phenomena is not explained by Huygen's construction of wave front ? a) refraction b) reflection c) polarization d) diffraction

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8. 8.

   The magnetic field intensity at the center of a circular coil of radius R and carrying current I is a) $\frac{{\mu }_{0}I}{R}$ b) $\frac{{\mu }_{0}I}{2R}$ c) $\frac{{\mu }_{0}I}{2\pi R}$ d) $\frac{2{\mu }_{0}I}{R}$

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9. 9.

   If $\chi$ is the magnetic susceptibility of a material then its relative permeability (${\mu }_r$) is a) $\chi +1$ b) $\chi -1$ c) $\frac{1}{\chi }$ d) $1+{\chi }^2$

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10. 10.

    A square coil of area $10^{-2}{\text{ m}}^2$ is placed perpendicular to a uniform magnetic field of intensity $10^3\text{ T}$. What is the magnetic flux through the coil ? a) 100 Weber b) 10 Weber c) $10^{-3}$ Weber d) $10^{-5}$ Weber

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11. 11.

    What is the point where the Seismic waves start called ? a) Epicenter b) Metacenter c) Hypocenter d) Seismic center

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