Neco 2021 Physics practical questions and answers is o
NECO 2021 PHYSIC PRACTICAL questions and ANSWERS
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(2bi)
The image produced by a simple camera is inverted while image on a mirror is erect.
(2bii)i)
v = 2u
v = 2 x 50
v = 100cm
(2bii)ii)
M = v/u
M = 50/50
M = 1
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(1x)
Slope; s DM/DT²
=178-50/0.7-0.07
=128/0.63
=203.1746
=203.17g|s²
(1xii)
(i)i avoided drought by closing the window
(ii)i avoided error due to parallax when reading the meter rule
(1bi)
Tabulate.
-Period-
(i)is the time taken to complete one oscillation/circle or to.
(ii)unit is second (s)
(iii)it is Oscillation motion
(iv)it is when a body moves in a to and fro manner
-Frequency of oscillation-
(i)is the number of complete oscillation in one second
(ii) frequency; unit Hertz (Hz)
(iii)it is a Rotation motion
(iv)it is when a body turns about an axis through the body
(1bii)
E= 25J
Extension= 6.7x10-²m
Force constant (k) = ?
E= 1/2ke²
2E = ke²
k = 2E/e²
k = 2x 25/(0.067)²
k = 50/0.00449
k = 11135.9Nm-¹
(3xi)
(i)I ensured tight connections
(ii) I avoided error due to parallax on the ammeter
1. Thermodynamics, science of the relationship between heat, work, temperature, and energy. In broad terms,thermodynamics deals with the transfer of energy from one place to another and from one form to another.
2. THERMO DYNAMIC SYSTEM: A system is defined as a region in space containing a quantity of matter whose behaviour is being investigated. This quantity of matter is separated from its surroundings by boundary, such as they walls of a vessel.
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