Phy 191 Past Question and Answers
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PHY 191
QUESTION NUMBER 1
What is the relative density of a liquid if an object weighs 20N in air, 17N when totally immersed in water and 18N immersed in the liquid.
A. 1.5
B. 0.67
C. 0.94
D. 1.05
ANSWER: B
QUESTION NUMBER 2
The qeneral equation of a straigth line graph is given as
A. y=mx + c
B. y=mx^2 + c
C. y=mx + c^2
D. y= m + cx
ANSWER: A
QUESTION NUMBER 3
0.2g/cm3 in S.I Unit is
A. 0.2 x 10^3kg/m^3
B. O.2kg/cm3
C. 2000kg/m3
D. 2.0kg/cm3
ANSWER: A
QUESTION NUMBER 4
internal diameter of an object is measured by
A. Vernier Caliper
B. Srew gauage
C. External Jaws
D. Internal jaws
ANSWER: D
QUESTION NUMBER 5
The expression for a loaded spring performing simple harmonic motion is given by M = gLT^2 /4n(pie)2-Mo. A student plotted the graph of M vs T2, use the information to answer questions 5 and 6 the slope of the graph is ———
A. Lg/T2
B. Lg/4n(pie)^2
C. g/4n(pie)L
D. 4n(pie)^2/Lg
ANSWER: B
QUESTION NUMBER 6
The Inverse of the intercept on M-axis is?
A. -1/Mo
B. 1/Mo
C. M-Mo
D. 1/M+Mo
ANSWER: A
QUESTION NUMBER 7
Uncertainties encountered in making observations are known as
A. Precision
B. Reliability
C. Errors
D. Accuracy
ANSWER: C
QUESTION NUMBER 8
An object has a specific heat capacity of 200J/kg/k, if 1 x 1-^5J of energy is required to change its temperatures from 20’C to 70’c, determines its mass
A. 100kg
B. 27kg
C. 17.5kg
D. 10kg
ANSWER: D
QUESTION NUMBER 9
The heat transfer reaches us through
A. Conduction
B. Radiation
C. Convention
D. Reflection
ANSWER: B
QUESTION NUMBER 10
Vernier Calliper has two scales
A. vernier scales and mid scales
B. main scale and minor scale
C. main and vernier scale
D. none of the above
ANSWER: C
