What is heat capacity? Explain the difference between heat capacity and specific heat capacity.
Solution: Here, we are going to label the given statements as true or false. Step1: a) The statement is true. Visible light is a form of electromagnetic radiation. It corresponds to a wavelength range of 400-700 nanometres and a colour range of violet through red. Step2: b) The statement is false. Ultraviolet light has shorter wavelengths than visible light. The wavelength range of visible light is 400-700 nm whereas that of ultraviolet light is 10-400 nm. Step3: c) The statement is false. X rays travel with the same speed as that of microwave. Both X rays and microwave are electromagnetic radiations. As wavelength has nothing to do with the speed of propagation, therefore, both X rays and microwave travel at the same speed, i.e., the speed of light. Step4: d) The statement is false. Electromagnetic radiation and sound waves travel at different speed. The speed of electromagnetic radiation is 3 x 10 ms whwereas the speed of sound waves is -1 340.29 ms . ------------------