Question

1. microscopes create images using beams of—

a. electrons only
b. sound waves
c. light or electrons
d. light only

Explanation:

Microscopes include light microscopes (using light beams) and electron microscopes (using electron beams). Option a is wrong as not only electrons; option b is wrong as microscopes don't use sound waves; option d is wrong as there are electron microscopes too. So the correct option is c.

Answer:

c. light or electrons