1. Which if the following is responsible for voice production?

a. movement of the tongue
b. opening and closing of the vocal cords
c. opening and closing of the lips
d. movement of the larynx

2. Which of the following properties of light waves can be associated with the formation of a mirage?

a. reflection
b. refraction
c. interference
d. diffraction


3. Through which of the following mediums does a sound travel the fastest?

a. sea water
b. a solid block of aluminum
c. a cup of coffee
d. air on a cool breezy day

4. Which of the following has a correct order of colors in the visible spectrum?

a. yellow-blue-green
b. red-yellow-orange
c. violet-blue-indigo
d. yellow-orange-blu

5. Which of the following affects the speed of sound in air?

a. loudness of sound
b. wavelength of sound
c. air temperature
d. frequency of sound

6. It is being described that has a light beam consists of one color.

a. Visible Light
b. Visible Spectrum
c. Polychromatic
d. Monochromatic

7. It is the property of light waves which depends on their frequency.

a. spectrum
b. ray model
c. color
d. intensity

8. Which of the following statement is true?

a. None from the choices
b. Frequency is the number of complete vibrations a wave does not make in a second
c. Frequency is the number of incomplete vibrations a wave makes in a second
d. Frequency is the number of complete vibrations a wave makes in a second