Question

Which of the following functions can a laser perform?

• A. They can be used for decorating purpose.
• B. They are used to destroy tumours.
• C. They can be used for cutting purpose.
• D. They can be used for welding.

Answer 1

Answer: (B), (C), (D)

The correct options are
B They are used to destroy tumours.
C They can be used for cutting purpose.
D They can be used for welding.

A laser is a high energy light beam. Since lasers have high energy, they can be used for destroying tumors, cutting purposes and welding. Lasers are also used in skin treatment therapy.