Physics
1- The audible frequency range is frequency between 20Hz to 20000Hz
2- Coulomb is the unit for electric charge
3-Newton second per square meter is the unit for Viscosity.
4-The value of acceleration of a body moving with constant velocity is zero.
5-The Electric circuit which changes its direction at regular intervals of time is called Alternating Current
6-Colorimeter instrument is used to determine the intensity of colors
7-Watt meter instrument is used to measure the power of electric circuit
8-Rate of change of distance is called Speed
9-Fathometer instrument is used to measure depth of ocean.
10-Rate of change of momentum is called Force.
11-The nuclear reaction in which a heavy nucleus splits into two nuclei of nearly equal mass is called Nuclear fission .
12-Candela is used to measure Intensity of flame.
13-Kelvin is used to measure Temperature
14-Steredian is used to measure Solid Angle
15-Watt is unit of Power
16-Newton per meter is unit of Surface Tension.
17-Newton second is unit of impulse.
18-Ohm is unit of Electric Resistance .
19-Henry is unit of Magnetic Induction.
20-Volt is unit of Potential Difference.