NECO Physics Practical Solution Questions and Answer – JUNE/JULY 2018 Expo Runz.
CLICK HERE FOR NO.2 IMAGE
Cos @ – |75|65|55|45|35|
Cos @ – |0.2588|0.4226|0.5736|0.7071|0.8192|
2aix)CLICK HERE FOR NO.2 GRAPH
From the graph
Snell’s law is a formula used to describe the relationship between the angles of incidence and refraction, when referring to light or other waves passing through a boundary between two different isotropic media, such as water, glass, or air.
were n is known as refractive index
given refractive index of glass =1.5
i;e a N g =1.5 (from air to glass)
critical angle for glass,C =42degree
i)I Ensured that the pins were vertical
ii)I Avoided parallax error when reading protractor.
CLICK HERE FOR NO.3 IMAGE
S/N – |1|2|3|4|5|
R(n) – |2|3|4|5|6|
V(v) – 2.10|2.30|2.40|2.50|2.60|
CLICK HERE FOR NO.3 GRAPH
=0.5 – 0.355/0.6 – 0
C = 0.355v^-1
i)I ensured that the terminals were firmly tight to prevent partial contact
ii)I avoided parallax error when taking reading from the voltmeter.
i)temperature of wire
ii)cross-sectional area of wire
iii)length of wire
iv)nature of wire
effective E.M.F =2V (parallel connection)
effective internal resistance =rxr/r+r=r/2 n
current I =0.8A
external Resistance R =2n
COMPLETED – GOOD LUCK
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: NECO 2018 Physics Practical Answer – June/July Expo
: NECO Physics Practical Solution Questions and Answer – JUNE/JULY 2018 Expo Runz. CLICK HERE FOR NO.2 IMAGE 2) Tabulate Cos @ – |75...