A guitar string is 75cm long. the wavelength of its fundamental note is
75cm
150cm
37.5cm
112cm
50cm
Correct answer is B
Wavelength = 2L = 2 X 75
Wavelength = 150
An electric charge could be transmitted through
wood, rubber and stone
paper, clay and plastic
glass, acid and cloth
The human body, water and metals
all of the above
Correct answer is D
No explanation has been provided for this answer.
Every house supplied with electricity is provided with a box of fuses so that
the consumption of electricity can be recorded
people residing in the house will not have an electric shock if they touch a live wire
the total current drawn from the mains can be limited
the voltage supply can be stabilized
it serves as a standby supply when there is a power failure
Correct answer is C
No explanation has been provided for this answer.