Phy 191 Past Questions Page 3
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PHY 191
QUESTION NUMBER 21
Supposed the formula relating E,R,r and i is I= E/R+r, where i and R are variables and E and r are constants— deduce the intercept
A. r/E
B. Rr/1
C. 1/E
D. r/E
ANSWER: D
QUESTION NUMBER 22
Given that L=20.00+- 0.05cm and w=15.00=-0.05cm. what is the maxmimum error in the sum
A. 0.1cm
B. 0.01cm
C. 0.05cm
D. 0.001cm
ANSWER: A
QUESTION NUMBER 23
consider the expression T^2 A/B LB3, where T^2 and L^3 are variables, if L^3 is plotted as abscissa and T^2 as ordinate, the slope of resulting graph is
A. B/A
B. 1/A
C. 1/B
D. A/B
ANSWER: A
QUESTION NUMBER 24
What is the reading accurancy of a vernier calliper
A. 0.01cm
B. 0.001cm
C. 0.01cm
D. 0.0001cm
ANSWER: C
QUESTION NUMBER 25
If the circular scale of micrometer screw guage is divided into 100 equal parts and it moves 0.5mm in one revolution, the pitch is
A. 100
B. 0.01
C. 0.5
D. 25
ANSWER: C
QUESTION NUMBER 26
If the circular scale of micrometer screw guage is divided into 100 equal parts and it moves 0.5mm in one revolution, find the least count of the guage
A. 0.5
B. 0.05
C. 0.01
D. 0.005
ANSWER: D
QUESTION NUMBER 27
A graduated cylinder is marked every millitre. how precise a measurement can you make with this instrument
A. +- 0.1ml
B. +-0.5ml
C. +-1.0ml
D. +-0.5cl
ANSWER: A
QUESTION NUMBER 28
If X=10.10+-0.05; Y=6.03+-0.01; Z=3.40+-0.02; and U=X+Y+Z, Calculate the maximum error in U?
A. 19.17+-0.08
B. 13.094+-0.3
C. 13.094+-0.2
D. 19.094+-0.2
ANSWER: A
QUESTION NUMBER 29
Calculate the standard error in U
A. 19.09+_0.03
B. 19.17+-0.06
C. 19.27+-0.08
D. 19.17+-0.07
ANSWER: B
QUESTION NUMBER 30
Least count of screw guage is
A. 0.01cm
B. 0.5cm
C. 0.01cm
D. 0.01mm
ANSWER: D
