Practice Set 1
If one mole of an ideal gas at (P1, V1) is allowed to expand reversibly and isothermally (A to B) its pressure is reduced to one-half of the original pressure (see figure). This is followed by a constant volume cooling till its pressure is reduced to one-fourth of the initial value (B→C). Then it is restored to its initial state by a reversible adiabatic compression (C to A). The net work done by the gas is equal to :
26
Sep
If one mole of an ideal gas at (P1, V1) is allowed to expand reversibly and isothermally (A to B) its pressure is reduced to one-half of the original pressure (see figure). This is followed by a constant volume cooling till its pressure is reduced to one-fourth of the initial value (B→C). Then it is [...]
The de – Broglie wavelength of a proton and alpha particle is same, the ratio of their velocities is :
26
Sep
The de – Broglie wavelength of a proton and alpha particle is same, the ratio of their velocities is : The de - Broglie wavelength of a proton and alpha particle is same the ratio of their velocities is : September 26, 2021 Category: JEE Mains Physics 2002-2019 Solved Video Solutions , Practice Set 1 [...]
Figure shows a circuit that contains four identical resistors with resistance R = 2.0 Ω, two identical inductors with inductance L = 2.0 mH and an ideal battery with emf E = 9 V. The current ‘i’ just after the switch ‘S’ is closed will be:
26
Sep
Figure shows a circuit that contains four identical resistors with resistance R = 2.0 Ω, two identical inductors with inductance L = 2.0 mH and an ideal battery with emf E = 9 V. The current ‘i’ just after the switch ‘S’ is closed will be: Figure shows a circuit that contains four identical resistors [...]
In the given figure, a body of mass M is held between two mass less springs, on a smooth inclined plane. The free ends of the springs are attached to firm supports. If each spring has spring constant k, the frequency of oscillation of given body is :
26
Sep
In the given figure, a body of mass M is held between two mass less springs, on a smooth inclined plane. The free ends of the springs are attached to firm supports. If each spring has spring constant k, the frequency of oscillation of given body is : a body of mass M is held [...]
Given below are two statements : Statement I : PN junction diodes can be used to function as transistor, simply by connecting two diodes, back to back, which acts as the base terminal. Statement II : In the study of transistor, the amplification factor b indicates ratio of the collector current to the base current. In the light of the above statements, choose the correct answer from the options given below :
26
Sep
Given below are two statements : Statement I : PN junction diodes can be used to function as transistor, simply by connecting two diodes, back to back, which acts as the base terminal. Statement II : In the study of transistor, the amplification factor b indicates ratio of the collector current to the base current. [...]
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back to back ,
choose the correct answer from the options given below. ,
Given below are two statements : Statement I : PN junction diodes can be used to function as transistor ,
simply by connecting two diodes ,
the amplification factor b indicates ratio of the collector current to the base current. In the light of the above statements ,
which acts as the base terminal. Statement II : In the study of transistor ,
The period of oscillation of a simple pendulum is T = 2π √ L/g . Measured value of ‘L’ is 1.0 m from meter scale having a minimum division of 1 mm and time of one complete oscillation is 1.95 s measured from stopwatch of 0.01 s resolution. The percentage error in the determination of ‘g’ will be
26
Sep
The period of oscillation of a simple pendulum is T = 2π √ L/g . Measured value of ‘L’ is 1.0 m from meter scale having a minimum division of 1 mm and time of one complete oscillation is 1.95 s measured from stopwatch of 0.01 s resolution. The percentage error in the determination of [...]
The logic circuit shown above is equivalent to :
26
Sep
The logic circuit shown above is equivalent to : The logic circuit shown above is equivalent to : September 26, 2021 Category: JEE Mains Physics 2002-2019 Solved Video Solutions , Practice Set 1 ,
A soft ferromagnetic material is placed in an external magnetic field. The magnetic domains :
26
Sep
A soft ferromagnetic material is placed in an external magnetic field. The magnetic domains : A soft ferromagnetic material is placed in an external magnetic field. The magnetic domains : September 26, 2021 Category: JEE Mains Physics 2002-2019 Solved Video Solutions , Practice Set 1 ,
On the basis of kinetic theory of gases, the gas exerts pressure because its molecules :
26
Sep
On the basis of kinetic theory of gases, the gas exerts pressure because its molecules : On the basis of kinetic theory of gases the gas exerts pressure because its molecules : September 26, 2021 Category: JEE Mains Physics 2002-2019 Solved Video Solutions , Practice Set 1 ,
Two electrons each are fixed at a distance ‘2d’. A third charge proton placed at the midpoint is displaced slightly by a distance x (x
26
Sep
Two electrons each are fixed at a distance ‘2d’. A third charge proton placed at the midpoint is displaced slightly by a distance x (x Two electrons each are fixed at a distance '2d'. A third charge proton placed at the midpoint is displaced slightly by a distance x (x September 26, 2021 Category: JEE [...]