1 Hz
2 Hz
4 Hz
8 Hz
Correct answer is A
Total distance = 2 x 160 = 320cm
Total time = \(\frac{320}{320}\) = 1s
F = \(\frac{1}{1}\) = \(\frac{1}{1}\)
= 1Hz
Which of the following is true of the loudness of sound? It
depends on the square of the amplitude of the vibrating body
is proportional to the distance of the observer from the source of the sound
is greatest in vacuum
is dependent in vacuum
Correct answer is A
No explanation has been provided for this answer.
1.0cm
1.5cm
2.0cm
5.0cm
Correct answer is A
\(\lambda\) = \(\frac{v}{f}\)
= \(\frac{20}{10}\)
= 2cm ; distance between adjacent nodes
= 2cm \ 2
= 1cm
real, inverted and diminished
virtual, inverted and enlarged
real, erect and enlarged
virtual, erect and enlarged
Correct answer is D
No explanation has been provided for this answer.
What is the effect of the increase in the size of the hole of a pin-hole camera on the image? it
gives a blurred image
corrects for chromatic aberration
magnifies the image
brings the image into a sharper focus
Correct answer is A
No explanation has been provided for this answer.