|
The radius of a sphere is measured as (2.1 ± 0.5) cm. Calculate its surface area with error limits
|
|
0
|
16038
|
August 16, 2016
|
|
A book with many printing errors contains four different formulae for the displacement y of a particle undergoing a certain periodic motion:
|
|
1
|
2172
|
August 16, 2016
|
|
Mention the number of significant figure in:
|
|
1
|
479
|
August 16, 2016
|
|
Answer the following:
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|
1
|
698
|
August 16, 2016
|
|
A famous relation in physics relates 'moving mass' m to the 'rest mass' tn0 of a particle in terms of its speed v and speed of light c
|
|
1
|
2145
|
August 16, 2016
|
|
What is scientific notation?
|
|
0
|
904
|
August 16, 2016
|
|
Dimensional formula of magnetic flux density (B) can be calculated from the relation F = qv Bsin , where F is force, q is charge, v is velocity and is an angle. Find [B]
|
|
0
|
12493
|
August 16, 2016
|
|
Give some physical quantities having same dimentional formulae as well as same units
|
|
0
|
1055
|
August 16, 2016
|
|
Mention some physical quantities having same dimensional formulae but different units
|
|
0
|
15480
|
August 16, 2016
|
|
The mass of a box measured by a grocer's balance is 2.3 kg
|
|
1
|
11749
|
August 16, 2016
|
|
Length, breadth and thickness of a metal piece are 4.234 m, 1.005 m and 2.01 cm respectively. Find its area and volume to correct significant figures
|
|
0
|
1017
|
August 16, 2016
|
|
Show that a calorie has a magnitude
|
|
1
|
670
|
August 16, 2016
|
|
What is least count error?
|
|
0
|
8698
|
August 16, 2016
|
|
Give dimensions of area and volume
|
|
0
|
1256
|
August 16, 2016
|
|
Give conventional rules for the rounding off of uncertain digits
|
|
0
|
2275
|
August 16, 2016
|
|
"A more precise measurement has to be more accurate." Comment
|
|
0
|
2455
|
August 16, 2016
|
|
Pick up the most accurate and most precise measurement of—(a) 50.00 m, (b) 5.00 m,(c)5.00 cm, (d) 5.00 mm
|
|
0
|
3536
|
August 16, 2016
|
|
Rule out or accept the following formulae for kinetic energy on the basis of dimensional arguments:
|
|
1
|
9515
|
August 16, 2016
|
|
Whether equation is dimensionally correct, where m is mass of the body, v is its final velocity, u is its initial velocity, F is applied force and s is distance covered
|
|
1
|
704
|
August 16, 2016
|
|
Find the percentage error in z, if
|
|
1
|
1821
|
August 16, 2016
|
|
Write the dimensional formula for surface energy, moment of inertia, angular velocity and gravitational force
|
|
0
|
6500
|
August 16, 2016
|
|
What is the % error in p?
|
|
1
|
497
|
August 16, 2016
|
|
A physical quantity P is related to four observables a, b, c and d as follows:
|
|
1
|
5909
|
August 16, 2016
|
|
Deduce the dimensional formula for R, using ideal gas equation PV = nRT
|
|
0
|
10943
|
August 16, 2016
|
|
The length and breadth of a rectangle are measured as (a ± Aa) and (b ± Ab) respectively. Find : (i) relative error, (ii) absolute error in the measurement of area
|
|
0
|
6123
|
August 16, 2016
|
|
Percentage error is the measurement of height and radius of cylinder are x and y respectively
|
|
1
|
8497
|
August 16, 2016
|
|
A physical quantity X is connected from X = a${{b}^{2}}$/C. Calculate percentage error in X, when % error in a, b, c are 4,2 and 3 respectively
|
|
0
|
1421
|
August 16, 2016
|
|
Which of the following measurement is more accurate and why?
|
|
1
|
3099
|
August 16, 2016
|
|
Two quantities A and B have different dimensions
|
|
1
|
1563
|
August 16, 2016
|
|
What are the dimensions of velocity gradient?
|
|
0
|
1203
|
August 16, 2016
|