Physics

An atom in an excited state is one whose A. Potential energy is minimum B. Potential … Read More

Which of the following pairs is part of the electromagnetic spectrum?  I. Radio waves II. sound waves … Read More

A substance has half of 3 min. After 6 min, the count rate was observed to … Read More

Which of the following instruments consumes the highest current? I. Electric iron II. Television set III. … Read More

In which of the following diagrams is the length of the tube equal to one wavelength?  … Read More

In an experiment in which molten naphthalene is allowed to cool, the cooling curve i n the … Read More

In the figure, the value of R is  A. 3(Omega)  B. 6(Omega)  C. 4(Omega)  D. 5(Omega)  … Read More

Two divers G and H are at depths 20m and 40m, respectively below the water surface … Read More

The fiqure above represents a block-and-tackle pulley system on which an effort of W Newtons supports … Read More

The lower and upper fixed points marked on a Mercury-in-glass thermometer are 210mm apart. The end … Read More