4/3
9/8
2/3
8/9
Refrigerators keep food unspoiled as
Relative humidity is expressed as
Remote-sensing device has an inbuilt source of
Richter scale is used for measuring
Rise of oil a wick is due to
Rocket works on the principle of
Roentgen discovered
Rolling friction is caused by _
Rutherfords scattering experiment proved the presence of
S.I. unit of Magnetic flux is
