Electrical energy is measured in___________________? April 17, 2025 by admin A. watt B. horse power C. kilo watt D. kilowatt hour
Electrical energy is converted to heat at the rate of___________________? April 17, 2025 by admin A. IRt B. I2R C. I2Rt D. VIt
A fuse is placed in series with the circuit to protect against__________________? April 17, 2025 by admin A. high power B. high voltage C. high current D. over heating
Which one of the following bulbs has the least resistance ? April 17, 2025 by admin A. 100 watt B. 200 watt C. 300 watt D. 60 watt
Optical active crystals rotates the __________________? April 17, 2025 by admin A. vibrating plane B. polarization plane C. diffraction plane D. interference plane
In double slit experiment we observe _____________________? April 17, 2025 by admin A. interference fringes only B. diffraction fringes only C. both interference and diffraction fringes D. polirized frringes
Which one of the following properties of light does not change with the nature of the medium ? April 17, 2025 by admin A. velocity B. wavelength C. amplitude D. frequency
Photoelectric effect was given by ____________________? April 17, 2025 by admin A. Hertz B. Fresnel C. Einstein D. Plank
Longitudinal waves do not exhibit _____________________? April 17, 2025 by admin A. reflection B. refraction C. diffraction D. polarization
A point source of light placed in a homogeneous medium gives rise to ___________________? April 17, 2025 by admin A. a cylindrical wave front B. an elliptical wave front C. a spherical wave front D. a plane wave front
