The peak voltage in 220 volt A.C. supply is nearly (A) 311 volt (B) 440 volt (C) 253 volt (D)220 volt 0 Physics MCQs Author: MCQs Master Report : If answer is wrong. July 31, 2021
The magnetic moment of a circular coil carrying current is (A) Inversely proportional to the square of the length of the wire in the coil (B) Directly proportional to the length of the wire in the coil (C) Inversely proportional to the length of the wire in the coil (D) Directly proportional to the square of the length of the wire in the coil 0 Physics MCQs Author: MCQs Master Report : If answer is wrong. July 31, 2021
Which one of the following is a simple harmonic motion? (A) A wave moving through a string fixed at both ends (B) A particle moving in a circle with uniform speed (C) Earth spinning about its own axis (D) Ball bouncing between two rigid vertical walls 0 Physics MCQs Author: MCQs Master Report : If answer is wrong. July 31, 2021
What will be the duration of the day and night (in hour) if the diameter of the earth is suddenly reduced to half its original value, the mass remaining constant? (A) 2 (B) 12 (C) 3 (D) 6 0 Physics MCQs Author: MCQs Master Report : If answer is wrong. July 31, 2021
The percentage errors in the measurements of mass and speed are 2% and 3% respectively. How much will be the maximum error in the estimate of the kinetic energy obtained by measuring mass and speed (A) 5% (B) 1% (C) 11% (D) 8% 0 Physics MCQs Author: MCQs Master Report : If answer is wrong. July 31, 2021
In Young’s experiment, two coherent sources are placed 0.90 mm apart and the fringes are observed one metre away. If its produces the second dark fringe at a distance of 1 mm from the central fringe, the wavelength of monochromatic light used would be A) 10 x 10-5cm (B) 60 x 10-4cm (C) 6 x 10-5cm (D) 10 x 10-4cm 0 Physics MCQs Author: MCQs Master Report : If answer is wrong. July 31, 2021
With the increase of temperature viscosity (A) Remains same (B) Decrease (C) Increase (D) Doubles 0 Physics MCQs Author: MCQs Master Report : If answer is wrong. July 31, 2021
One cannot see fog because (A) Light suffers total reflection at the droplet in a fog (B) The refractive index of fog is infinity (C) Fog absorbs light (D) Light is scattered by the droplet in fog 0 Physics MCQs Author: MCQs Master Report : If answer is wrong. July 31, 2021
In an L-R circuit, time constant is that time in which current grows from zero to the value (A) Io (B) 0.37 Io (C) 0.63 Io (D) 0.50 Io 0 Physics MCQs Author: MCQs Master Report : If answer is wrong. July 31, 2021
The sieman is the SI unit of (A) Conductance (B) Resistance (C) Specific Resistance (D) Inductance 0 Physics MCQs Author: MCQs Master Report : If answer is wrong. July 31, 2021