Physics Quiz - Competitive Exams JEE

Free practice quiz: Physics (Competitive Exams JEE). 74 multiple-choice questions with answers and explanations. Play online, no sign-up needed.

Sample questions

1. A particle starts from rest with uniform acceleration 2 m/s². The distance traveled in the 5th second is:

   1. 18 m
   2. 10 m
   3. 9 m
   4. 25 m
   Show answer

   Answer: C. 9 m

2. The resonant frequency of a series LCR circuit is:

   1. 1/(2πLC)
   2. 1/(2π√(LC))
   3. √(LC)/(2π)
   4. 2π√(LC)
   Show answer

   Answer: B. 1/(2π√(LC))

3. A satellite orbits Earth in a circular orbit of radius r. If the gravitational force is proportional to 1/r², the total mechanical energy of the satellite is proportional to:

   1. 1/r²
   2. 1/r
   3. -1/r
   4. -1/r²
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   Answer: C. -1/r

4. The pressure inside a soap bubble of radius r and surface tension T exceeds the outside pressure by:

   1. 2T/r
   2. 4T/r
   3. T/2r
   4. T/r
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   Answer: B. 4T/r

5. A current-carrying wire is bent into a circular arc of radius R subtending an angle of 90° at the center. The magnetic field at the center is:

   1. μ₀I/4πR
   2. μ₀I/4R
   3. μ₀I/2R
   4. μ₀I/8R
   Show answer

   Answer: D. μ₀I/8R

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