EASY
MHT-CET
IMPORTANT
Earn 100

If x=(a-b), the maximum percentage error in the measurement of x will be,
 

50% studentsanswered this correctly

Important Questions on Measurements

EASY
MHT-CET
IMPORTANT
If radius of the sphere is (5.3±0.1) cm. Then percentage error in its volume will be,
 
EASY
MHT-CET
IMPORTANT
Resistance of a given wire is obtained by measuring the current flowing in it and the voltage difference applied across it. If the percentage errors in the measurement of the current and the voltage difference are 3% each, then error in the value of resistance of the wire is 
EASY
MHT-CET
IMPORTANT
In an experiment four quantities abc  and d are measured with percentage error 1%2%3% and 4%, respectively. Quantity P is calculated as follows:
P=a3b2cd% error in P is, 
 
EASY
MHT-CET
IMPORTANT
Let x=a2b2c be the physical quantity. If the percentage error in the measurement of physical quantities a, b and c is 2%3% and 4%, respectively then percentage error in the measurement of x is, 
 
EASY
MHT-CET
IMPORTANT
Two full turns of the circular scale of a screw gauge cover a distance of 1mm on its main scale. The total number of divisions on the circular scale is 50 . Further, it is found that the screw gauge has a zero error of -0.03mm While measuring the diameter of a thin wire, a student notes the main scale reading of 3mm and. the number of circular scale divisions in line with the main scale as 35 . The diameter of the wire is
 
EASY
MHT-CET
IMPORTANT

The circular divisions of shown screw gauge are 50. It moves 0.5 mm on the main scale in one rotation. The diameter of the ball is

Question Image

EASY
MHT-CET
IMPORTANT
A screw gauge with a pitch of 0.5 mm and a circular scale with 50 divisions is used to measure the thickness of a thin sheet of aluminium. Before starting the measurement, it is found that when the two jaws of the screw gauge are brought in contact, the 45th division coincides with the main scale line and that the zero of the main scale is barely visible. What is the thickness of the sheet if the main scale reading is 0.5 mm and the 25th  division coincides with the main scale line?
MEDIUM
MHT-CET
IMPORTANT
A student measured the diameter of a small steel ball using a screw gauge of the least count 0.001 cm. The main scale reading is 5 mm and zero of circular scale division coincides with 25 divisions above the reference level. If screw gauge has a zero error of -0.004 cm, the correct diameter of the ball is