## Measurements and Uncertainties

Calculator Allowed: Yes Question Answer Transcription of this question: A1.This question is about data analysis.Data for the refractive index n Of a type Of glass and wavelength Of the light transmittedthrough the glass are shown below.Only the uncertainties in the values Of n are significant and these uncertainties are shown byerror bars.1.6061.6061 _6051.6051.6041.6041.60351.6031.6021_6021.601300350450500550600650(a)(b)(c)State why the […]

## Measurements and Uncertainties

Calculator Allowed: Yes Question Answer Transcription of this question: A1.Some data for the resistance R Of an electrical component at different temperatures areshown below.10.015.025.030.035.040.0A graph Of the variation with temperatureshown below. Error bars have been included.26002150151012801080925t Of the resistance R Of the component is3400320030002800260024002200200018001600140012001000800101520 2530354045(a)(b)Estimate the(i)(ii)uncertainty range in the temperature measurements.percentage uncertainty in the resistance […]

## Measurements and Uncertainties

Calculator Allowed: Yes Question Answer Transcription of this question: A1. This question is about the mass-radius relation for a certain type of star.The radius R and mass M Of ten different stars were measured and the results are shownplotted below.2.001.751.50125LOO0.750.500.250.40.81.22.0The radius is expressed in terms of the Sun’s radius Rs and the mass in terms […]

## Measurements and Uncertainties

Calculator Allowed: No Question Answer Transcription of this question: 4.The period T of oscillation Ofa mass m on a spring, having spring constant k is T —The uncertainty in k is 1 1 % and the uncertainty in m is 5 The approximate uncertainty in T is40/0.c.

## Measurements and Uncertainties

Calculator Allowed: No Question Answer Transcription of this question: 3.The diagram below shows two vectors X and Y.Which Of the following best represents the vector Z=X— Y

## Measurements and Uncertainties

Calculator Allowed: No Question Answer Transcription of this question: 2.The frequency waves Of wavelength travelling on the surface Of deep water is given bywhere g is the acceleration Of free fall.Which Of the following will yield a straight-line graph

## Measurements and Uncertainties

Calculator Allowed: No Question Answer Transcription of this question: An elephant has a life expectancy Of 60 years. Which Of the following gives the order of magnitudeof this lifetime

## Measurements and Uncertainties

Calculator Allowed: No Question Answer Transcription of this question: 4.The electrical resistance R Of a component varies with temperature T according to the expressionwhere Ro and k are constants.A graph Of the variation withaxis is equal tooflnR is drawn and a straight line is obtained. The intercept on thec.-lnR0lnR0lnR0lnR0

## Measurements and Uncertainties

Calculator Allowed: No Question Answer Transcription of this question: 3.A small steel ball falls from rest through a distance Of 3m. When calculating the time Of fall,air resistance can be ignored becauseA.B.D.air is less dense than steel.air resistance increases with the speed Of the ball.the air is not moving.air resistance is much less than the […]

## Measurements and Uncertainties

Calculator Allowed: No Question Answer Transcription of this question: 2.A student uses a metre rule and a set-square to measure a series Of vertical heights, as shown.set-squaremetre ruleheightbe measuredThe metre rule is not vertical.What type Of error is reduced by using a set-square and what type Of error is caused because themetre rule is not […]