Diesel
Radium
Coal
Uranium
In a particular system, the units of length, mass and time are chosen to be 10 cm, 10 g and 0.1 s respectively. The unit of force in this system will be equivalent to
In a pressure cooker cooking is faster because the increase in vapour pressure
In a railway track, two rails are joined end to end with a gap in between them because
In a rechargeable cell what kind of energy is stored within the cell
In a refrigerator cooling is produced by
In a room where the temperature is 30°C a body cools from 61°C to 59°C in 4 minutes. The time taken by the body to cool from 51°C to 49°C will be about
In a simple microscope, the lens is held at a distance d from the eye and the image is formed at the least distance (D) of distinct vision from the eye. What is the magnifying power of the microscope?
In a sprayer, the liquid rises in the tube due to
In a step up transformer, which of the following is correct?
In a thyristor the gate lead is connected to the n layer near the p layer to which anode is connected
