NOUN Exam Slip Stamping Requirements 2018

These are requirements for exam slip stamping in preparation for the Noun Examination Excercise 2018 TAKE NOTE OF THESE REQUIREMENTS...

NOUN iLearn Past Questions and Answers - PHY 191 GENERAL PHYSICS PRACTICAL

NOUN iLearn Past Questions and Answers
NOUN iLearn Past Questions and Answers - PHY 191 GENERAL PHYSICS PRACTICAL



Question 1
In an experiment to determine the value of g using simple pendulum, $T^2$ was plotted on the ordinate (vertical axis) and l on the abscissa (horizontal axis), where T and l are the period and length of the pendulum respectively. The value of g was determined to be $9.72ms^-2$.The value of the slope s to 2 decimal places was _________. Take $pi=22/7$
ANS: 4.06s^{2}m{-1}

Question 2
The equation $x=at^b$ is suggested for the variation of two quantities x and t where a and b are constants.
The corresponding equation of a straight line graph that may be plotted from experimental values of x and t is _____________.
ANS: logx=loga+blogt

Question 3
In an experiment to verify Boyle's law the P (pressure) was plotted against _________ of the volume V to obtain a linear graph that passes through the origin
ANS: Reciprocal

Question 4
The current I passing through a silicon diode is related to potential difference V across it by I=Ioexp(eV/2kT), where Io is a constant, e the electronic charge, k the Boltzmann's constant and T the absolute temperature.
lnI was experimentally plotted against V at a given value of T. The slope of the graph is __________.
ANS: e/2kt
Question 5
The maximum possible error in the measurement of length using the metre scale is __________.
ANS: 0.05
Question 6
A smaller measurement is more ____________ for the same accuracy
ANS: Precise
Question 7
__________________ is the more accurate between the measurements 40.0 cm and 8.0 cm of length
ANS: 40.0
Question 8
A number N is written as $N=Ax10^{p}$, where A is a number between 1 and 10 and p is an integer. In this form N is said to be expressed in ___________
ANS: Scientific notation
Question 9
In recording measured values, a digit is significant if and only if it affects the _____________ of the
ANS: Relative error
Question 10
The product of two measurements 1.23cm and 2.3cm should be rounded off as _______________.
ANS: 2.8cm
Question 11
The sum of the measurements 2.11m, 2.1546m and 2.125m may be rounded off as ______________
ANS: 6.39m
Question 12
Errors that might result in measured values which are consistently too high or too low are called __________ errors
ANS: Systematic
Question 13
The precision index for the set of data 3.69,3.67,3.68,3.69,3.68,3.69,3.66,3.67 is _________________ to 3 decimal places
ANS: 0.003
Question 14
The displacement s of a trolley as a function of time is given as $s+ds=0.63\pm0.02$ for $t+dt=1.71pm0.10$s.The error dv in the measurement of velocity v is ______ to 2 decimal places.
ANS: 0.02ms^{-1}
Question 15
The simple pendulum experiment is used to determine an inaccessible height H using the relation
$T=\pi\sqrt(\frac{(H-h)}{g}))$, where h is the height of the bob from the floor. The inaccessible height is obtainable from the _______ of the graph of $T^{2}$ plotted against h
ANS: Intercept on the h axis


Question 1
In an experiment, measurements of variables were repeated in order to minimize ____________
ANS: Random
Question 2
A mass of 150g when hung on a spiral spring stretches it 40cm. Assuming the spring is Hookean, the period of oscillation of the mass when slightly displaced and released is _____ to 2 decimal places
ANS: 1.27s
Question 3
A wooden block is at the verge of sliding freely down a wooden inclined plane when the inclination is 20degrees. The coefficient of limiting friction is _______ to 2 decimal places
ANS: 0.36
Question 4
The resulting temperature when 1kg of ice at 0 degrees Celsius is mixed with 9kg of water at 50
degrees Celsius is _________ to the nearest whole number. The specific capacity of water is 4200J/kg/K, the specific latent heat of fusion of ice is 330 000J/kg
ANS: 37 degrees Celsius
Question 5
When writing the results of an experimental observation in terms of significant digits, all non-zero
digits are ____________
ANS: Significant
Question 6
An experiment which gives a straight line graph with positive intercepts on both axes of the graph has a An experiment which gives a straight line graph with positive intercepts on both axes of the graph has a________ slope
ANS: Negative
Question 7
A quantity to be measured as __________ value is independent of the process of measurement
ANS: True
Question 8
The slope of a graph is obtained from a suitable ________ of slope drawn on the graph
ANS: Triangle
Question 9
The slope of the tangent to a curve which is parallel to the horizontal axis of the graph is ______________
ANS: Zero
Question 10
A straight line joining most of the plotted points with the rest of the plotted points on either sides of the line is called line of ___________
ANS: Best fit
Question 11
In a simple pendulum experiment, $T^{2} (s^{2})$ is plotted on the vertical axis while ____________ is plotted on the horizontal axis
ANS: l/cm
Question 12
To obtain a suitable spread of the plotted points on the graphed paper, a suitable ____________ must be chosen for each axis of the graph
ANS: Scale
Question 13
In simple harmonic motion, the restoring force F obeys _______________'s law for small displacements from equilibrium position
ANS: Hooke
Question 14
The motion of a simple harmonic oscillator is such that the acceleration is in _______________ direction to the displacement from equilibrium position
ANS: Opposite
Question 15
The equation of a simple harmonic oscillator takes the form $a ={-} \omega^{2}$x. The symbols have their usual. The equivalent of $\omega^{2}$ in the case of a simple pendulum is _______________________
ANS: g/l

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