11th Physics Monthly Test - 3 ( Nature of Physical World and Measurement)

MABS Institution

11th Physics Monthly Test - 3 ( Nature of Physical World and Measurement)-Aug 2020

Time : 2.00 Hours

Part - A

Generic 2 - Answer All Question

What is the aim of our Science Education

State the number of significant figures in 2.64\(\times\)1024 kg

Define one light year.

Define the SI unit of electric current.

Distinguish between classical mechanics and quantum mechanics.

Assuming that the frequency \(\gamma\) of a vibrating string may depend upon (i) applied force (F) (ii) length (I) (iii) mass per unit length (m), prove that \(\gamma\infty{{1}\over{l}}\sqrt{{{F}\over{m}}}\)using dimensional analysis.

Is it possible to have length and velocity both as fundamental quantities? why?

A RADAR signal is beamed towards a planet and its echo is received 7 minutes later. If the distance between the planet and the Earth is 6.3 x 10¹⁰m. Calculate the speed of the signal.

A laser light beamed at the moon takes 2.56s and to return after reflection at the moon's surface. What will be the radius of lunar orbit?

A physical quantity P is related to four observables a, b, c and d as follows:
P = \(\frac { { a }^{ 3 }b^{ 2 } }{ d\sqrt { c } } \)
The percentage errors of measurement in a, b, c and d are 1%, 3%, 4% and 2% respectively. What is the percentage error in the quantity P?

Name three practical units to measure Area.

State the number of significant figures in 0.2300m

When the planet Jupiter is at a distance of 824.7 million kilometers from the earth. its angular diameter is measured to be 35.72 of arc. Calculate the diameter of Jupiter.

What is Physics?

Part - B

Generic 3 - Answer All Question

A body travels uniformly a distance of (13.8 ± 0.2) m in a time (4.0 ± 0.3) s. Determine velocity of the body within error limits.

In Vander Wall's gas equation \((P+\frac{a}{V^2})(V-b)=RT\) Determine the dimensions of a and b.

The radius of gold nucleus is 41.3 fermi. Express its volume in m³.

Write the rules for determining significant figures.

Find the dimensions of a/b in the equation.F = a\(\sqrt{x}\) +bt², where F is force, x is distance and t is time.

State the principle of homogeneity. Test the dimensional homogeneity of equations s= ut +\(\frac { 1 }{ 2 } \)at²

What are fundamental quantities and derived quantities?

"Technological advancements owe a great deal to the developments in physics" - Explain.

If the constant of gravitation (G), Planck's constant (h) and the velocity of light (c) be chosen as fundamental units. What is the dimension of the radius of gyration?

Find the dimensions of mass in terms of Energy, length and time

Check the correctness of the following equation using dimensional analysis. Make a comment on it. S = ut + 1/4at² where s is the displacement, u is the initial velocity, t is the time and a is the acceleration produced.

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11th Physics Monthly Test - 3 ( Nature of Physical World and Measurement)

MABS Institution

11th Physics Monthly Test - 3 ( Nature of Physical World and Measurement)-Aug 2020

Part - A

Generic 2 - Answer All Question

What is the aim of our Science Education

State the number of significant figures in 2.64\(\times\)1024 kg

Define one light year.

Define the SI unit of electric current.

Distinguish between classical mechanics and quantum mechanics.

Assuming that the frequency \(\gamma\) of a vibrating string may depend upon (i) applied force (F) (ii) length (I) (iii) mass per unit length (m), prove that \(\gamma\infty{{1}\over{l}}\sqrt{{{F}\over{m}}}\)using dimensional analysis.

Is it possible to have length and velocity both as fundamental quantities? why?

A RADAR signal is beamed towards a planet and its echo is received 7 minutes later. If the distance between the planet and the Earth is 6.3 x 1010m. Calculate the speed of the signal.

A laser light beamed at the moon takes 2.56s and to return after reflection at the moon's surface. What will be the radius of lunar orbit?

A physical quantity P is related to four observables a, b, c and d as follows: P = \(\frac { { a }^{ 3 }b^{ 2 } }{ d\sqrt { c } } \) The percentage errors of measurement in a, b, c and d are 1%, 3%, 4% and 2% respectively. What is the percentage error in the quantity P?

Name three practical units to measure Area.

State the number of significant figures in 0.2300m

When the planet Jupiter is at a distance of 824.7 million kilometers from the earth. its angular diameter is measured to be 35.72 of arc. Calculate the diameter of Jupiter.

What is Physics?

Part - B

Generic 3 - Answer All Question

A body travels uniformly a distance of (13.8 ± 0.2) m in a time (4.0 ± 0.3) s. Determine velocity of the body within error limits.

In Vander Wall's gas equation \((P+\frac{a}{V^2})(V-b)=RT\) Determine the dimensions of a and b.

The radius of gold nucleus is 41.3 fermi. Express its volume in m3.

Write the rules for determining significant figures.

Find the dimensions of a/b in the equation.F = a\(\sqrt{x}\) +bt2, where F is force, x is distance and t is time.

State the principle of homogeneity. Test the dimensional homogeneity of equations s= ut +\(\frac { 1 }{ 2 } \)at2

What are fundamental quantities and derived quantities?

"Technological advancements owe a great deal to the developments in physics" - Explain.

If the constant of gravitation (G), Planck's constant (h) and the velocity of light (c) be chosen as fundamental units. What is the dimension of the radius of gyration?

Find the dimensions of mass in terms of Energy, length and time

Check the correctness of the following equation using dimensional analysis. Make a comment on it. S = ut + 1/4at2 where s is the displacement, u is the initial velocity, t is the time and a is the acceleration produced.

What is Gross Error & How can it be minimised.

Does AU and \(\mathring{A}\) represent the same unit of length?

Give any three applications of physics in our society.

Comment

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A RADAR signal is beamed towards a planet and its echo is received 7 minutes later. If the distance between the planet and the Earth is 6.3 x 10¹⁰m. Calculate the speed of the signal.

A physical quantity P is related to four observables a, b, c and d as follows:
P = \(\frac { { a }^{ 3 }b^{ 2 } }{ d\sqrt { c } } \)
The percentage errors of measurement in a, b, c and d are 1%, 3%, 4% and 2% respectively. What is the percentage error in the quantity P?

The radius of gold nucleus is 41.3 fermi. Express its volume in m³.

Find the dimensions of a/b in the equation.F = a\(\sqrt{x}\) +bt², where F is force, x is distance and t is time.

State the principle of homogeneity. Test the dimensional homogeneity of equations s= ut +\(\frac { 1 }{ 2 } \)at²

Check the correctness of the following equation using dimensional analysis. Make a comment on it. S = ut + 1/4at² where s is the displacement, u is the initial velocity, t is the time and a is the acceleration produced.