Ques No.1: Pure gold is _________.
Ans: 24 carat
Ques No.2: The first laser ever used is ___________.
Ans: Semiconductor laser
Ques No.3: Hereditary disorders are the result of ____________.
Ans: Defective DNA nucleus
Ques No.4: Three dimensional image formed by laser is called _________.
Ques No.5: Carbon dioxide is used in ____________.
Ans: fire extinguishers
Ques No.6: Laser is used to produce an image of ___________.
Ans: One dimension
Ques No.7: _________ is used to measure Time.
Ques No.8: The procedure of crushing the gallstone and kidney stone by laser is called _________.
Ques No.9: Red color has the longest wavelength and violet has the __________.
Ans: shortest wavelength
Ques No.10: __________ receives the signal and give its output through the Printer.
Ans: Fax machine