Physics Questions and Answers
If you want to learn more about the nature and properties of matter and energy or you're simply preparing for a Physics exam, these Physics past questions and answers are ideal for you.
If you want to learn more about the nature and properties of matter and energy or you're simply preparing for a Physics exam, these Physics past questions and answers are ideal for you.
The visible part of light consists of the following colours
red, indigo, infra-red, violet, yellow, green and blue
red, green, blue, violet, indigo, orange and yellow
blue, ultra-violet, infra-red, red, yellow, indigo, violet,green and orange
infra-red and ultra-violet
red, orange, yellow, green, blue, indigo and infra-red
Correct answer is B
The visible colors of white light is given by the acronym: ROYGBIV which stands for Red, Orange, Yellow, Green, Blue, Indigo and Violet.
0.5cm
1.5cm
3cm
2.5cm
2cm
Correct answer is E
\(\frac{\text{image distance}}{\text{object distance}}\) = \(\frac{\text{image height}}{\text{object height}}\)
\(\frac{30}{15}\) = \(\frac{\text{image height}}{1}\)
image height = 2cm
170ms-1
136ms-1
340ms-1
680ms-1
510ms-1
Correct answer is C
Velocity = \(\frac{\text{distance}}{\text{time}}\)
echo time = halt total time
= \(\frac{1}{2}\) x 4 = 25
velocity = \(\frac{680}{2}\)
= 340ms-1
mainly through air
fainter in stretched string
faster through gases than in solids and liquids
with greater ease through a string than in air
none of the above is correct
Correct answer is D
No explanation has been provided for this answer.
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