D.radio
3. What type of electromagnetic waves is used in radar?
a. infrared rays
c radio waves
b. microwaves
d. ultraviolet rays
4. Which of the following EM waves can give intense damage
to living things?
a. visible light
c. microwaves
b. gamma rays
d. infrared waves
DRAWING FOR
REFER TO THIS
QUESTIONS 5-7.
Plane Mirror
B
5°
с
5. Letter A ls
a. angle of incidence
c. incident ray
b. normal line
d. reflected ray
6. What kind of reflection is shown in the drawing?
a. diffused reflection c. direct reflection
b. regular reflection
d. indirect reflection
7. If the angle in C is 35º, what should be the angle of A?
a. 45 degrees
c. 35 degrees
b. 50 degrees
d. 7 degrees
8. The back of the spoon resembles to
a convex mirror
c plane mirror
b. concava mirror
d. converging lens​