Question 17
Original source text (the exact panel preserves diagram labels, tables and choices):
An oscilloscope is an electronic instrument that visually displays time-varying
electrical signals as waveforms on a screen. When a light sensor is connected
to the oscilloscope and exposed to monochromatic light, it converts the light into
an electrical signal. The oscilloscope then displays the corresponding frequency
of that light on the screen. Four of such observations are given below.
If you have to guess the color of the lights in order, which of the following options
is the BEST assumption?
A. (i) Violet (ii) Red (iii) Blue (iv) Yellow
B. (i) Yellow (ii) Violet (iii) Red (iv) Blue
C. (i) Blue (ii) Yellow (iii) Violet (iv) Red
D. (i) Red (ii) Blue (iii) Yellow (iv) Violet
An oscilloscope is an electronic instrument that visually displays time-varying
electrical signals as waveforms on a screen. When a light sensor is connected
to the oscilloscope and exposed to monochromatic light, it converts the light into
an electrical signal. The oscilloscope then displays the corresponding frequency
of that light on the screen. Four of such observations are given below.
If you have to guess the color of the lights in order, which of the following options
is the BEST assumption?
A. (i) Violet (ii) Red (iii) Blue (iv) Yellow
B. (i) Yellow (ii) Violet (iii) Red (iv) Blue
C. (i) Blue (ii) Yellow (iii) Violet (iv) Red
D. (i) Red (ii) Blue (iii) Yellow (iv) Violet