Which of the following is NOT a fundamental S.I unit?
Meter
Ampere
Kelvin
Seconds
Radian
Correct answer is E
No explanation has been provided for this answer.
Which of the following is most strongly deflected by magnetic field?
\(\gamma\) - rays
X- particle
\(\beta\) - particles
X - rays
Correct answer is C
No explanation has been provided for this answer.
1.3 x 1015Hz
7.5 x 105Hz
1.2 x 1011Hz
7.5 x 1014Hz
Correct answer is D
F = \(\frac{V}{\lambda}\)
= \(\frac{3 \times 10^8}{400 \times 10^{-9}}\)
= 75 x 1015Hz
= 7.5 x 10^14 Hz
If the inclination at Ibadan is 7oS, this means that
the angle between the geographic meridian and the magnetic meridian at Ibadan is 7o
the earth's magnetic intensity at Ibadan makes angle 7o with the horizontal direction
the earth's magnetic intensity at Ibadan makes angle 7o with the horizontal direction
the north pole of a magnetic needle dips downward at Ibadan
Correct answer is B
No explanation has been provided for this answer.
The sign of the change on a charged glass rod may be determined with
a charged electroscope
an uncharged electroscope
a galvanometer
an electrometer
Correct answer is A
No explanation has been provided for this answer.