11th Physics Weekly Test -2 ( Nature of Physical World and Measurement)

MABS Institution

11th Physics Weekly Test -2 ( Nature of Physical World and Measurement)-Aug 2020

Time : 1.30 Hours

Part - A

Generic 2 - Answer All Question

Name the technique used in locating.
(a) an under water obstacle
(b) position of an aeroplane in space.

Write the methods to determine the masses of objects?

Round off the following numbers as indicated 19.45 up to 3 digits

Name the physical quantities that have dimensional formula [ML^-11^-2].

If displacement of a body s = (200 ± 5) m and time taken by it t = (20 + 0.2) s, then find the percentage error in the calculation of velocity.

State the number of significant figures in 0.2300m

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

Define one steradian.

If the error in measurement of mass of a body be 3% and in the measurement of velocity be 2%. What will be maximum possible error in calculation of kinetic energy.

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

Part - B

Generic 5 - Answer All Question

The force F acting on a body moving in a circular path depends on mass of the body (m), velocity (v) and radius (r) of the circular path. Obtain the expression for the force by dimensional analysis method. (Take the value of k = 1)

Explain in detail the various types of errors.

One mole of an ideal gas at STP occupies 22.4 L. What is the ratio of molar volume to atomic volume of a mole of hydrogen? Why is the ratio so large? Take radius of hydrogen molecule to be 1^oA.
A capacitor of capacitance C = 3.0 ± 0.1 \(\mu \)F is charged to a voltage of V = 18 ± 0.4 Volt. Calculate the charge Q [Use Q = CV].

A planet moves around the sun in nearly circular orbit. Its period of revolution ''T' depends upon.
(i) radius 'r' of orbit, (ii) mass 'm' of the sun and (iii) The gravitational constant G Show dimensionally that T² \(\propto\)r³.

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11th Physics Weekly Test -2 ( Nature of Physical World and Measurement)

MABS Institution

11th Physics Weekly Test -2 ( Nature of Physical World and Measurement)-Aug 2020

Part - A

Generic 2 - Answer All Question

Name the technique used in locating. (a) an under water obstacle (b) position of an aeroplane in space.

Write the methods to determine the masses of objects?

Round off the following numbers as indicated 19.45 up to 3 digits

Name the physical quantities that have dimensional formula [ML-11-2].

If displacement of a body s = (200 ± 5) m and time taken by it t = (20 + 0.2) s, then find the percentage error in the calculation of velocity.

State the number of significant figures in 0.2300m

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

Define one steradian.

If the error in measurement of mass of a body be 3% and in the measurement of velocity be 2%. What will be maximum possible error in calculation of kinetic energy.

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

Part - B

Generic 5 - Answer All Question

The force F acting on a body moving in a circular path depends on mass of the body (m), velocity (v) and radius (r) of the circular path. Obtain the expression for the force by dimensional analysis method. (Take the value of k = 1)

Explain in detail the various types of errors.

One mole of an ideal gas at STP occupies 22.4 L. What is the ratio of molar volume to atomic volume of a mole of hydrogen? Why is the ratio so large? Take radius of hydrogen molecule to be 1oA.

A capacitor of capacitance C = 3.0 ± 0.1 \(\mu \)F is charged to a voltage of V = 18 ± 0.4 Volt. Calculate the charge Q [Use Q = CV].

A planet moves around the sun in nearly circular orbit. Its period of revolution ''T' depends upon. (i) radius 'r' of orbit, (ii) mass 'm' of the sun and (iii) The gravitational constant G Show dimensionally that T2 \(\propto\)r3.

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Name the technique used in locating.
(a) an under water obstacle
(b) position of an aeroplane in space.

Name the physical quantities that have dimensional formula [ML^-11^-2].

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

One mole of an ideal gas at STP occupies 22.4 L. What is the ratio of molar volume to atomic volume of a mole of hydrogen? Why is the ratio so large? Take radius of hydrogen molecule to be 1^oA.

A planet moves around the sun in nearly circular orbit. Its period of revolution ''T' depends upon.
(i) radius 'r' of orbit, (ii) mass 'm' of the sun and (iii) The gravitational constant G Show dimensionally that T² \(\propto\)r³.