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.
8cm
10cm
15cm
18cm
20cm
Correct answer is B
Radius of curvature(r)=12cm
focal length(F) = r ÷ 2 → 12 ÷ 2 = 6cm
therefore F = 6cm
magnification(M) = v ÷ u
1.5 = v ÷ u
:v = 1.5u
Using mirror formula
1/f =1/v + 1/u
\(\frac{1}{6}\) =\(\frac{1}{1.5u}\) + \(\frac{1}{u}\)
\(\frac{1}{6}\) = \(\frac{1 + 1.5}{1.5u}\)
\(\frac{1}{6}\) = \(\frac{2.5}{1.5u}\)
1 * 1.5u = 2.5 * 6
u = \(\frac{15}{1.5}\) = 10
therefore object distance =10cm.
The angle between the geographic and the magnetic meridians at a place on the earth’s surface is the
angle of declination
angle of depression
angle of dip
latitude of the place
longitude of the place
Correct answer is A
No explanation has been provided for this answer.
ammeter
avometer
coil resistor
multiplier
shunt
Correct answer is E
No explanation has been provided for this answer.
The relative density of dilute tetraoxosulphate (vi) acid in a battery is measured with a
barometer
hydrometer
manometer
hypsometer
Correct answer is B
No explanation has been provided for this answer.
Calculate the energy stored in an inductor of inductance 0.5H when a current of 3A flows through it.
15.00 J
9.45 J
6.00 J
4.50J
2.25 J
Correct answer is E
No explanation has been provided for this answer.