MCQs4All - Physics Collection

Physics MCQs for NTS, FPSC, CSS, PPSC, PMS, UTS, FTS, OTS, Teaching, CT, PTC, SST, B.Ed, M.Ed Test of past papers

Question. For ___________ flow the path of the fluid particles cannot be tracked?
  1. Laminar
  2. Streamline
  3. Turbulent
  4. Both A and B
Question. A wire of resistance R is coiled inductively so that its inductance is L. The impedance of the coil at a frequency of f is_______________?
  1. (R+2πfL)
  2. R+1/2πfL
  3. (R2+f2L2)
  4. (R2+4π2f2L2)
Question. Newton estimated the speed of sound _____________________?
  1. 281m/sec
  2. 333m/sec
  3. 340m/sec
  4. all of the above
Question. An inductor may store energy in ________________?
  1. Its electric field
  2. Its coils
  3. Its magnetic field
  4. Both electric and magnetic fields
Question. Two identical coaxial circular loops carry equal currents in the same direction. If the loops approach each other the current in______________?
  1. Each increase
  2. Each decrease
  3. Each remains the same
  4. One increases whereas that in the other decreases
Question. At constant temperature the graph between V and 1/P is_____________?
  1. Hyperbola
  2. Parabola
  3. A curve of any shape
  4. A straight lime
Question. The drag force is given by_________________?
  1. Newtons law
  2. Pascals law
  3. Gauss law
  4. Stokes law
Question. The unit of force is _________ and its symbol is ______________ Which is the correct pair ?
  1. Newton, n
  2. Newton, N
  3. newton, n
  4. newton, N
Question. The number 76.85 is rounded off up to two significant figures as_____________?
  1. 76.8
  2. 77
  3. 76.9
  4. None of these
Question. The bulk properties of materials such as their mode of fracture can be related to their____________________?
  1. Polymerization
  2. Cleavage
  3. Microstructure
  4. Dislocation
Question. Magnification of the astronomical telescope is_____________?
  1. fo+fe
  2. fo/fe
  3. fe/fo
  4. (1+fo/fe)L/fo
Question. An inductive coil has a resistance of 100Ω. When an AC signal of frequency 1000Hz is fed to the coil the applied voltage leads the current by 45Ω. What is the inductance of the coil ?
  1. 10mH
  2. 12mH
  3. 16mH
  4. 20mH
Question. A moving coil galvanometer of resistance 100? gives half scale deflection for a current of 20mA. What will be the potential difference across it ?
  1. 4 volt
  2. 5 volt
  3. 2 volt
  4. 0.4 volt