PHY191 TMA 1: Questions And Answers

Q1. Which of the following measured values are more precise

$$20.56^ {o}C $$

$$32.22 ^{o}C$$

$$20.6{^o}C$$

A &B

Q2. What determine the values of an experimental data/result

"quality of measuring instruments."

the experimental graphs

the samples for the experiment

the table of values

Q3. Which of the following is the best equation of a linear graph

y=mx+b               $$

y=ax+bx$$

$$ y=mx-b$$

$$ y=m(x+b)$$

Q4. From relative error, which of the following is more accurate

40.0 cm

8.0 cm  

A and B

all of the above

Q5. When carrying out scientific experiment the values are recorded as _________

approximate values

experimental result

exact results

inexact result

Q6. How do we determine the relationship between two variables

Graph

Experimentation

Measurement

non of the above

Q7. The following are types of graphs except

linear graph passing the origin

reducing non-linear equation to non equation

non linear graph passing the origin

none of the above

Q8. The following are examples of a non-linear graphs except

Displacement-time

velocity-time

Newton's cooling curves

all of the above

Q9. What kind of error occure due to faulty measuring instrument.

error due to parallax

zero error

error due to human judgement

all of the above

Q10. The equation that relate anwser to question one above is _________

y=ax+bx

y=mx+b               $$

v=d/t$$

non of the above

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