Which of the following is the smallest prefix?
a) atto
b) pico
c) nano
d) femto
Which of the following numbers show one significant digit?
a) 1.1
b) 6.0
c) 7.1
d) 6×102
Which of the following numbers shows 4 significant digits?
a) 900.8
b) 4
c) 5174.00
d) 0.0002
A light year is distance traveled by light in one year. It travels about 9.460×1015 m. How many significant figures are in this number?
a) 6
b) 2
c) 3
d) 4
Explanation: Powers of ten are not significant figures.
0.2 mm in units of meters is…………..
a) 0.0002 m
b) 2×10-4 m
c) none
d) both a & b
Explanation: 0.2mm=0.2×10-3m=2×104m=0.0002 m
KITAB UL MANAZIR is the name of book written by…………..
a) Yaqub Kindi
b) Ibnal Haitham
c) Al Beruni
d) none of these
