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C hoose the correct statem ent from the following

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Match the Column I (domains) with Column II (relation) and select the correct option from the codes given below. Column I Column II A. Mechanics P. electric and magnetic fields B. Electrodynamics q. macroscopic equilibrium C. Thermodynamics r. Newton’s laws of motion

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Match the Column I (physical quantities) with Column II (scale) and select the correct option from the codes given below. Column I Column II A. Size of electron or proton P. `10^(-30) kg` B. Mass of an electron q. `10^(-14) m` C. Extent of universe r. `10^(26) m`

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Match the Column I (nam e of physicists) with Column II (contribution/discovery) and select the correct option from the codes given below. Column I Column II A. Johannes Kepler P. Nuclear model of the atom B. Tycho Brahe q. Planetary motion C. Nicolaus Copernicus r. Elliptical orbit theory D. Ernest Rutherford s. Circular orbit theory

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Assertion: The concept of energy is central to Physics and its expression can be written for every physical system. Reason: Law of conservation of energy is not valid for all forces and for any kind of transform ation between different forms of

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Assertion: Physics generates new technology. Reason: Technology give rise to new

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Assertion: Symmetry of laws of nature with respect to translation in space give rise to conservation of linear momentum . Reason: Isotropy of space does not underlies the law of conservation of angular momentum

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Assertion: A ccording to the principle of conservation of energy, all heat can be converted into mechanical work. Reason: Due to various losses, it is im possible to convert all heat into mechanical

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Assertion: Matter can neither be created nor be destroyed. Reason: This is law of definite

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Assertion: Electric force and magnetic force are jointly called electrom agnetic force. Reason: Electric and magnetic effects are

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The quantity having the same unit in all system of unit

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The SI unit of thermal conductivity

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The damping force on an oscillator is directly proportional to the velocity. The unit of the constant of proportionality

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The density of a material in SI units is `128 kg m^(-3)` . In certain units in which the unit of length is 25 cm and the unit of mass is 50 g, the numerical value of density of the material

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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If the value of work done is `10^(10)g-cm^ 2 s^(-2)`, then its value in SI units will

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Amongst the following options, which is a unit of

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The moon is observed from two diametrically opposite points A and B on earth. The angle `theta` subtended at the moon by the two directions of observation is `1°54';` given that the diameter of the earth to be about `1.276xx10^7 m`. Compute the distance of the moon from the

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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The ratio of the volume of the atom to the volume of the nucleus is of the order

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A student measured the length of a rod and wrote it as 3.50 cm. Which instrument did he use to measure

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The length, breadth and height of a rectangular block of wood were measured to be `l= 12.13 ± 0.02 cm, b = 8.16 ± 0.01 cm and h = 3.46 ± 0.01

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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