A cell whose internal resistance is 0.55\(\Omega\) delivers a current of 4 A to an external resistor. The lost voltage of the cell is?
Which of the following liquid is a poor conductor of electricity?
An isotope has an initial activity of 120 Bq. 6 days later its activity is 15 Bq. The half-life is?
The secondary pigments consist of?
A person standing waist-deep in a swimming pool appears to have short legs because of light?
