The diagram above is a block and tackle pulley system in which an effort of 80N is use to lift a load of 240N. The efficiency of the machine is
If ray travelling in air is incident on a transparent medium as shown in the diagram, the refractive index of the medium is given as
In the diagram above , the current I is
The diagram above shows the capacitors C\(_1\), C\(_2\) and C\(_3\) 2μF, 6μF and 3μF respectively. The potential difference across C\(_1\), C\(_2\) and C\(_3\) respectively are
