THE ANSWERS OF THE PHYSICS QUESTION , THIS IS NOT COMPLETE YET BUT HERE IS 10 VERIFIED QUESTION AND ANSWERS OTHERS WILL BE ADDED SOON
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1) Correct Answer: Option C
Explanation
General formular of Gas laws
(P1V1) ÷ T1= (P2V2) ÷ T2
P1 = 800mmHg, V, = 76cm3, Tr = 273 + 27 = 300k
P2 = 760mmHg, V2 = ? T2= 273 + 0 = 273
(800 × 76) ÷ 300 = (760 × V2) ÷ 273
V2 = (300 × 76 × 273) ÷ (300 × 760) = 72.8 cm3
The volume of gas as S.T.P = 72.8 cm3
2)Correct Answer: Option A
Explanation
Boyle‘s law stats that the volume of a given mass of a gas, at a constant temperature is inversely proportional to us pressure.
Mathematically
V ∝ l/p, v = k/p (where k is constant)
K = VP
Let k = k1
Then, if k = k, V and P = V1P1
V1P1 = V2P2
3)Correct Answer: Option C
Explanation
Ray – a beam of light or radiation
4)Correct Answer: Option B
Explanation
XL = WL = 2πFL (w = 2πf)
XL = reactance inductor (S.I unit Ω)
L = inductance (L) in Henry
XL = 1Ω, f = 50/π, L = ?
1 = 2× π × 50/π × L
1 = 100L
i.e. 100L = 1
L = 1/100
0.01H
∴ Inductance (L) of a inductor = 0.01H
5)Correct Answer: Option A
Explanation
Stroboscope is a scientific instrument used to make a wave appears stationary when used
6)Correct Answer: Option B
Explanation
In an inelastic collision, linear momentum is conserved and energy is decreased
Momentum and kinetic energy are conserved in elastic collision
7)Correct Answer: Option B
Explanation
Note:The principle of floatation states that a floating body displaces its own weight of the fluid or which its float.
For object to sink weight of the object (W) > upthrust of the fluid (v) i.e. w > u
(i.e. weight of the body (or object) mass of the fluid)
8)Correct Answer: Option A
Explanation
Formula for general gas law
V × 1/T × P
N [(PV) ÷ T] = K is constant
9)Correct Answer: Option D
Explanation
The appearance of pool of water on road surfaces is called MIRAGE
His observation show that light from the sun ray refracted through a layer of hot air(layer) which is closed to the ground, passes from a hot air layer to the cold layer
10)Correct Answer: Option B
Explanation
Sun are self luminous source
Moon is a non – luminous
JAMB PHYSICS TEST
1
If the volume of a gas is recorded as 76cm3 at a temperature of 27°C with a pressure of 800mmHg. What will be the volume of the gas at S.T.P?
A. 36.2cm3
B. 25.7cm3
C. 72.8cm3
D. 24.3cm3
2
Boyle’s law may be Written as
A. P1V1= P2V2
B. V1 = V2 ÷ T1T2
C. P1T1 = P2T2
D. P1V1 ÷ T1 = P1V1 ÷ T2
3
The direction of the path taken by light is called
A. Locus
B. Lines
C. Ray
D. Beam
4
What is the inductance (L) of an inductor whose reactance is 1Ω at 50/ π hertz (H)?
A. 100 H
B. 0.01H
C. 10H
D. 1H
5
A stroboscope can be used to make the wave appear …………..
A. Stationary
B. In motion
C. Dipper
6
In an elastic collision
I. Energy is conserved
II. Energy is decreased
III. Energy is increased
IV. Linear momentum conserved
A. I only
B. I and IV only
C. II only
D. III only
7
Body floats in fluid when its …………………
A. Displaces its own volume of the liquid (fluid)
B. Displaces its own weight of the fluid
C. Displace its own density of the fluid
D. Is no longer subjected to gravity
8
The general gas law can be written as
A. PV ÷ T = a constant
B. PV = a constant
C. v/t = a constant
D. p/T = a constant
9
A motor boy of a driver saw what seems to appear to be a pool of water a head of him, while his driver drives a new truck on a sunny day. Which of the following explains his observation?
A. He saw a flying objects
B. He must be thinking of water and food
C. He was seeing the shadow of the car
D. The sun ray from the sky were passing from a hot air (layer) to cold layer
10
Which of the following is not luminous object?
A. The sun
B. The moon
C. light candle
D. Star
