Page 682 - SUBSEC October 2017_Neat

-2- 02138032/SPEC/K/MS/JUNE 2017

PHYSICS
UNIT 1 — PAPER 032
MARK SCHEME

Question 1
KC UK XS
(a) Results of Experiment:

Measured values to a consistent number of decimal places 1
(1)

Calculated values to a consistent number of significant 1
figures (1)
[2 marks]

(b) Graph of lg T vs lg m:

Suitable scales (2)
Labelled axes (quantity and unit)(1)
5-6 correct points (3)
3-4 correct points (Award 2 marks only)
1-2 correct points (Award 1 mark only)
Best-fit straight line(1)
[7 marks] 7

(c) Analysis

(i) b = gradient of line

large gradient triangle (1)
correct read off of points (1) 1 2
correct calculated value (approx. 0.5) (1)

[3 marks]

(ii) lg a = y-intercept (1)

correct calculation of a (1) [2 marks] 2

(d) Correct statement of equation with values of a and b (1) 1

Total 15 marks 5 10