A. All accurately known and all doubtful digits
B. Only accurately known digits
C. Only doubtful digits
D. All accurately known digits and the first doubtful digit
Measurements
1024 can be written in scientific notation as______________?
A. 1.024×103
B. 2 Raised to power 10
C. 0.000976
D. 1/0.00097
Total uncertainty, in the result obtained from the subtraction of two measurements, is equal to_______________?
A. Sum of their absolute uncertainties
B. The difference of their absolute uncertainties
C. The product of their absolute uncertainties
D. Division of their absolute uncertainties
An ideal standard of measurement of a base quantity has characteristics_______________?
A. Accessible
B. Invariable
C. Transportable
D. Only a and b are correct
The uncertainty in a measurement may occur due to_______________?
A. Limitation of an instrument
B. Natural variation of the object to be measured
C. Inadequate technique
D. All given in A, B and C
One pico stands for_________________?
A. 10 raised to power -15
B. 10 raised to power -12
C. 10 raised to power -9
D. 10 raised to power -6
To reduce the uncertainty in the timing experiment______________?
A. Highly precise instrument
B. Conduct at room temperature
C. Count number of vibration
D. Both a and C
ML-1 T-2 is the dimension of_______________?
A. Force
B. Pressure
C. Momentum
D. Energy
Which of the following is not a correct representation method for prefixes______________?
A. 1mm
B. 10km
C. 1000um
D. Both A and B
Which one is not a branch of physical sciences ?
A. Chemistry
B. Astronomy
C. Geology
D. Biology
