Who first showed that heat is a form of energy and mechanical energy can be converted into heat energy. James Prescott Joule is renowned for his experiments demonstrating the mechanical equivalent of

The question asks who first showed that heat is a form of energy and mechanical energy can be converted into heat energy. James Prescott Joule is renowned for his experiments demonstrating the mechanical equivalent of heat.

• The correct option is (খ) জেমস প্রেসকট জুল.

The question asks which name is considered the architect of astronomy. Galileo Galilei made significant contributions to observational astronomy and supported the heliocentric model, revolutionizing the field.

• The correct option is (খ) গ্যালিলিও.

The question asks which scientist discovered quantum theory. Max Planck is credited with originating quantum theory in 1900.