Practice Set 1
Number of molecules in a volume of 4 cm^3 of a perfect monoatomic gas at some temperature T and at a pressure of 2 cm of mercury is close to ? (Given, mean kinetic energy of a molecule (at T) is 4 × 10^–14 erg, g = 980 cm/s^2, density of mercury = 13.6 g/cm^3)
18
Sep
Number of molecules in a volume of 4 cm^3 of a perfect monoatomic gas at some temperature T and at a pressure of 2 cm of mercury is close to ? (Given, mean kinetic energy of a molecule (at T) is 4 × 10^–14 erg, g = 980 cm/s^2, density of mercury = 13.6 g/cm^3) [...]
Four resistances 40 Ω, 60 Ω, 90 Ω and 110 Ω make the arms of a quadrilateral ABCD. Across AC is a battery of emf 40 V and internal resistance negligible. The potential difference across BD in V is ____.
18
Sep
Four resistances 40 Ω, 60 Ω, 90 Ω and 110 Ω make the arms of a quadrilateral ABCD. Across AC is a battery of emf 40 V and internal resistance negligible. The potential difference across BD in V is ____. 60 Ω 90 Ω and 110 Ω make the arms of a quadrilateral ABCD. Across [...]
The speed versus time graph for a particle is shown in the figure. The distance travelled (in m) by the particle during the time interval t = 0 to t = 5 s will be _____.
18
Sep
The speed versus time graph for a particle is shown in the figure. The distance travelled (in m) by the particle during the time interval t = 0 to t = 5 s will be _____. The speed versus time graph for a particle is shown in the figure. The distance travelled (in m) by [...]
A quantity x is given by (IFv^2/WL^4) where, I is the moment of inertia, F is force, v is work and L is the length. The dimensional formula for x is same as that of
18
Sep
A quantity x is given by (IFv^2/WL^4) where, I is the moment of inertia, F is force, v is work and L is the length. The dimensional formula for x is same as that of A quantity x is given by (IFv^2/WL^4) where F is force I is the moment of inertia v is work [...]
Identify the operation performed by the circuit given below.
18
Sep
Identify the operation performed by the circuit given below. Identify the operation performed by the circuit given below. September 18, 2021 Category: JEE Mains Physics 2002-2019 Solved Video Solutions , Practice Set 1 ,
A cube of metal is subjected to a hydrostatic pressure of 4 GPa. The percentage change in the length of the side of the cube is close to (Given bulk modulus of metal, B = 8 × 10^10 Pa)
18
Sep
A cube of metal is subjected to a hydrostatic pressure of 4 GPa. The percentage change in the length of the side of the cube is close to (Given bulk modulus of metal, B = 8 × 10^10 Pa) A cube of metal is subjected to a hydrostatic pressure of 4 GPa. The percentage change [...]
In a photoelectric effect experiment, the graph of stopping potential V versus reciprocal of wavelength obtained is shown in the figure. As the intensity of incident radiation is increased
18
Sep
In a photoelectric effect experiment, the graph of stopping potential V versus reciprocal of wavelength obtained is shown in the figure. As the intensity of incident radiation is increased In a photoelectric effect experiment the graph of stopping potential V versus reciprocal of wavelength obtained is shown in the figure. As the intensity of incident [...]
A person pushes a box on a rough horizontal platform surface. He applies a force of 200 N over a distance of 15 m. Thereafter, he gets progressively tired and his applied force reduces linearly with distance to 100 N. The total distance through which the box has been moved is 30 m. What is the work done by the person during the total movement of the box?
18
Sep
A person pushes a box on a rough horizontal platform surface. He applies a force of 200 N over a distance of 15 m. Thereafter, he gets progressively tired and his applied force reduces linearly with distance to 100 N. The total distance through which the box has been moved is 30 m. What is [...]
The driver of a bus approaching a big wall notices that the frequency of his bus’s horn changes from 420 Hz to 490 Hz when he hears it after it gets reflected from the wall. Find the speed of the bus if speed of the sound is 330 ms^–1
18
Sep
The driver of a bus approaching a big wall notices that the frequency of his bus’s horn changes from 420 Hz to 490 Hz when he hears it after it gets reflected from the wall. Find the speed of the bus if speed of the sound is 330 ms^–1 The value of current i1 flowing [...]
A body is moving in a low circular orbit about a planet of mass M and radius R. The radius of the orbit can be taken to be R itself. Then the ratio of the speed of this body in the orbit to the escape velocity from the planet is
18
Sep
A body is moving in a low circular orbit about a planet of mass M and radius R. The radius of the orbit can be taken to be R itself. Then the ratio of the speed of this body in the orbit to the escape velocity from the planet is The value of current i1 [...]