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Which of the following is the most electropositive element (a) Aluminium (b) Magnesium (c) Phosphorus (d) Sulphur
10
Nov
Which of the following is the most electropositive element (a) Aluminium (b) Magnesium (c) Phosphorus (d) Sulphur Which of the following is the most electropositive element (a) Aluminium (b) Magnesium (c) Phosphorus (d) Sulphur November 10, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,
A conducting sphere of radius r is surrounded by a poorly conducting material of inner radius a and oueter radius b whose resistivity rho varies with rho = rho0r^3. Find teh resistance between the sphere and the outer surface of surrounding conducting material.
10
Nov
A conducting sphere of radius r is surrounded by a poorly conducting material of inner radius a and oueter radius b whose resistivity rho varies with rho = rho0r^3. Find teh resistance between the sphere and the outer surface of surrounding conducting material. How many electrons per second pass through a section of wire carrying [...]
A uniform copper wire of mass 2.23 × 10^−3 kg carries a current of 1 A when 1.7 V is applied across it. Calculate its length and area of cross-section. If the wire is uniformly stretched to double its length, calculate the new resistance. Density of copper is 8.92 × 10^3 kg/m^3 and resistivity is 1.7 × 10^−8 Ω m
10
Nov
A uniform copper wire of mass 2.23 × 10^−3 kg carries a current of 1 A when 1.7 V is applied across it. Calculate its length and area of cross-section. If the wire is uniformly stretched to double its length, calculate the new resistance. Density of copper is 8.92 × 10^3 kg/m^3 and resistivity is [...]
Which one of the following represents the electronic configuration of the most electropositive element
10
Nov
Which one of the following represents the electronic configuration of the most electropositive element Which one of the following represents the electronic configuration of the most electropositive element November 10, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,
Assertion : More is the electron affinity greater is the reducing character. Reason : Reducing character depends on number of electrons gained.
10
Nov
Assertion : More is the electron affinity greater is the reducing character. Reason : Reducing character depends on number of electrons gained. Assertion : More is the electron affinity greater is the reducing character. Reason : Reducing character depends on number of electrons gained. November 10, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma [...]
The space between the plates of a parallel plate capacitor is compeletely filled with a materuial of resistivity 2 x 10^11 ohm m and dielectric constant with the given dielectric medium between th eplates is 20 nF. Find the leakage current if a potential difference 2500 V is applied across the capacitor.
10
Nov
The space between the plates of a parallel plate capacitor is compeletely filled with a materuial of resistivity 2 x 10^11 ohm m and dielectric constant with the given dielectric medium between th eplates is 20 nF. Find the leakage current if a potential difference 2500 V is applied across the capacitor. How many electrons [...]
In comparison with alkali metals, the electron affinity of halogens is (a) Very high (b) Very low (c) Nearly same (d) Exactly same
10
Nov
In comparison with alkali metals, the electron affinity of halogens is (a) Very high (b) Very low (c) Nearly same (d) Exactly same In comparison with alkali metals the electron affinity of halogens is (a) Very high (b) Very low (c) Nearly same (d) Exactly same November 10, 2020 Category: Uncategorised (JEE Advanced Physics by [...]
Which among the following factors is the most important in making fluorine the strongest oxidizing halogen (a) Hydration enthalpy (b) Ionisation enthalpy
10
Nov
Which among the following factors is the most important in making fluorine the strongest oxidizing halogen (a) Hydration enthalpy (b) Ionisation enthalpy Which among the following factors is the most important in making fluorine the strongest oxidizing halogen (a) Hydration enthalpy (b) Ionisation enthalpy November 10, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma [...]
The electron affinity of Be is similar to (a) He (b) B (c) Li (d) Na
10
Nov
The electron affinity of Be is similar to (a) He (b) B (c) Li (d) Na The electron affinity of Be is similar to (a) He (b) B (c) Li (d) Na November 10, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,
The current density across a cylindrical conductor of radius R varies in magnitude according to the equation J = J0 ( 1−r/R ) where r is the distance from the central axis. Thus, the current density is a maximum J0 at that axis (r = 0) and decreases linearly to zero at the surface (r = R). Calculate the current in terms of J0 and the conductor ‘s cross – sectional area A = πR2.
10
Nov
The current density across a cylindrical conductor of radius R varies in magnitude according to the equation J = J0 ( 1−r/R ) where r is the distance from the central axis. Thus, the current density is a maximum J0 at that axis (r = 0) and decreases linearly to zero at the surface (r [...]