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. The function of collimeter in spectrometer is________________?
  1. to produce parallel beams of light
  2. to filter the light rays
  3. to make them
  4. no function
Question. The bombardment of nitrogen with alpha particles will produce______________?
  1. Neutron
  2. Proton
  3. Electron
  4. Positron
Question. The periodic alternation of sound between maximum and minimum loudness are called___________________?
  1. silence zone
  2. interference
  3. beats
  4. resonance
Question. The trajectory (or path) of a projectile is_________________?
  1. straight line
  2. parabola
  3. hyperbola
  4. circle
Question. The phase angle between the voltage and the current in an AC circuit consisting of a resistance is______________?
  1. Zero
  2. 45°
  3. 90°
  4. 180°
Question. If a car moves with a uniform speed of 2 ms-1 in a circle of radius 0.4. Its angular speed is______________?
  1. 4 rad. S-1
  2. 5 rad. S-1
  3. 1.6 rad. S-1
  4. 2.8 ms-1
Question. The performance of a refrigerator is described by________________?
  1. efficiency
  2. coefficient of performance
  3. both A and B
  4. not described
Question. The blue colour of the sky is due to___________________?
  1. diffraction
  2. reflection
  3. polarization
  4. scattering
Question. To find the r.m.s value of an alternating current mathematically we need to have ________________?
  1. Mean value of I2
  2. Square root of mean value of I2
  3. Square root of I2
  4. Square of 1/2
Question. In the transistor schematic symbol, the arrow_______________?
  1. is located on the emitter
  2. is located on the base
  3. is locate on the collector
  4. points form north to south
Question. The operation of a transistor requires______________?
  1. That the emitter be heated
  2. That the base be heated
  3. That the collector be heated
  4. None of the above
Question. The dimension of force is__________________?
  1. MLT-1
  2. MLT-2
  3. ML-1T
  4. ML-1T-2
Question. In multimode step index fibre the refractive index of core and cladding is____________?
  1. same
  2. different
  3. zero
  4. different with refractive index of core higher than cladding