In an experiment, on determining the density of a rectangular block, the dimensions of the block are measured with a vernier calipers (with a least count of 0.01 cm) and its mass is measured with a beam balance of least count 0.1 g


0

3831

August 16, 2016

Just as precise measurements are necessary in science, it is equally important to be able to make rough estimates of quantities using rudimentary ideas and common observations


1

1080

August 16, 2016

Precise measurements of physical quantities are a need of science


1

464

August 16, 2016

It is required to find the volume of a rectangular block


1

5350

August 16, 2016

Suppose we use a physical balance to measure the mass of an object and find the mean value of our observations to be 156.28 g


0

2236

August 16, 2016

The two specific heat capacities of a gas are measured as Cp = (12.28 ± 0.2) units and Cv = (3.97 ± 0.3) units. Find the value of the gas constant R


0

3922

August 16, 2016

A small error in the measurement of the quantity having the highest power (in a given formula), will contribute maximum percentage error in the value of the physical quantity to whom it is related. Explain why?


0

1603

August 16, 2016

The length and breadth of a rectangular block are 25.2 cm and 16.8 cm, which have both been measured to an accuracy of 0.1 cm. Find the area of the rectangular block


0

6307

August 16, 2016

The radius of a sphere is measured as (2.1 ± 0.5) cm. Calculate its surface area with error limits


0

15721

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

1857

August 16, 2016

Mention the number of significant figure in:


1

407

August 16, 2016

Answer the following:


1

603

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

1821

August 16, 2016

What is scientific notation?


0

831

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

12211

August 16, 2016

Give some physical quantities having same dimentional formulae as well as same units


0

958

August 16, 2016

Mention some physical quantities having same dimensional formulae but different units


0

14369

August 16, 2016

The mass of a box measured by a grocer's balance is 2.3 kg


1

11114

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

779

August 16, 2016

Show that a calorie has a magnitude


1

583

August 16, 2016

What is least count error?


0

8323

August 16, 2016

Give dimensions of area and volume


0

851

August 16, 2016

Give conventional rules for the rounding off of uncertain digits


0

2112

August 16, 2016

"A more precise measurement has to be more accurate." Comment


0

2365

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

3283

August 16, 2016

Rule out or accept the following formulae for kinetic energy on the basis of dimensional arguments:


1

8654

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

569

August 16, 2016

Find the percentage error in z, if


1

1673

August 16, 2016

Write the dimensional formula for surface energy, moment of inertia, angular velocity and gravitational force


0

6300

August 16, 2016

What is the % error in p?


1

414

August 16, 2016
