# The particle of mass 50 kg is at rest. The work done to accelerates it by 20 m/s in 10 s is   1.  103 J   2.  104 J   3.  2×103 J   4.  4×103 J

Subtopic:  Concept of Work |
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The moment of inertia of a circular loop of radius R, at a distance of R/2 around a rotating axis parallel to horizontal diameter of loop is

1.  MR2

Subtopic:  Moment of Inertia |
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The ratio of radius of two bubbles is 2: 1. What is the ratio excess pressure inside them?

1.  1: 2

Subtopic:  Surface Tension |
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In the capacitor of capacitance C, charge Q and energy W is stored. If charge is increases upto 2Q, the energy stored will be

1.

Subtopic:  Energy stored in Capacitor |
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The unit of thermal conductivity is

1.  Wm-1K-1

Subtopic:  Conduction |
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Photon and electron are given same energy (10‑20J). Wavelength associated with photon and electron are λp and λe, the correct statement will be

Subtopic:  De-broglie Wavelength |
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The half life of radioactive elements is 600 yr the fraction of sample that would remain after 3000 yr is

1.  1/2

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A particle moves along with x-axis. The position x os particles with respect to time t from origin given by x = b0 + b1t + b2t2. The acceletration of particle is

1.  b0

Subtopic:  Acceleration |
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Root mean square speed of the molecules of ideal gas is v. If pressure is increased two times at constant temperature, then the rms speed will become

1.

Subtopic:  Types of Velocities |
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1 mol of gas occupies a volume of 200 mL at 100 mm pressure. What is the volume occupied by two moles of gas at 400 mm pressure and at same temperature?

1.  50 mL

Subtopic:  Ideal Gas Equation |