Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions)
When an ammter of negligible internal resistance is inserted in series with circuit it reads 1A When the voltmeter of very large resistance is connected across X it reads 1V. When the point A and B are shorted by a conducting wire, the voltmeter meausres 10V across the battery. The internal resistance of the battery is equal to
13
Nov
When an ammter of negligible internal resistance is inserted in series with circuit it reads 1A When the voltmeter of very large resistance is connected across X it reads 1V. When the point A and B are shorted by a conducting wire, the voltmeter meausres 10V across the battery. The internal resistance of the battery [...]
H2O2 to 2H+ + O2 + 2e-; E = -0.68 V. This equation represents which of the following behaviour of H2O2 (a) Reducing (b) Oxidizing (c) Acidic (d) Catalytic
13
Nov
H2O2 to 2H+ + O2 + 2e-; E = -0.68 V. This equation represents which of the following behaviour of H2O2 (a) Reducing (b) Oxidizing (c) Acidic (d) Catalytic H2O2 to 2H+ + O2 + 2e-; E = -0.68 V. This equation represents which of the following behaviour of H2O2 (a) Reducing (b) Oxidizing (c) [...]
A voltmeter having resistance of `1800 Omega` is employed to measure the potential difference across `200 Omega` resistance which is connected to DC power supply of 50 V and internal resistance `20 Omega`. What is the percentage change in potential difference across `200 Omega` resistance as a result of connecting voltmeter across it ?
13
Nov
A voltmeter having resistance of `1800 Omega` is employed to measure the potential difference across `200 Omega` resistance which is connected to DC power supply of 50 V and internal resistance `20 Omega`. What is the percentage change in potential difference across `200 Omega` resistance as a result of connecting voltmeter across it ? if [...]
H2O2 used in rockets has the concentration (a) 50% (b) 70% (c) 30% (d) 90%
13
Nov
H2O2 used in rockets has the concentration (a) 50% (b) 70% (c) 30% (d) 90% H2O2 used in rockets has the concentration (a) 50% (b) 70% (c) 30% (d) 90% November 13, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,
In an experiment to measure the internal resistance of a cell by potentiometer, it is found that the balance point is at a length of 2m when the cell is shuntedd by a 5Ω resistance, and is at a length of 3m when the cell is shunted by a 10Ω resistance. The internal resistance of the cell is, then
13
Nov
In an experiment to measure the internal resistance of a cell by potentiometer, it is found that the balance point is at a length of 2m when the cell is shuntedd by a 5Ω resistance, and is at a length of 3m when the cell is shunted by a 10Ω resistance. The internal resistance of [...]
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and is at a length of 3m when the cell is shunted by a 10Ω resistance. The internal resistance of the cell is ,
In an experiment to measure the internal resistance of a cell by potentiometer ,
it is found that the balance point is at a length of 2m when the cell is shuntedd by a 5Ω resistance ,
then ,
Which of the following cannot be oxidised by H2O2 (a) O3 (b) KI / HCl (c) PbS (d) Na2SO3
13
Nov
Which of the following cannot be oxidised by H2O2 (a) O3 (b) KI / HCl (c) PbS (d) Na2SO3 Which of the following cannot be oxidised by H2O2 (a) O3 (b) KI / HCl (c) PbS (d) Na2SO3 November 13, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,
In the given circuit , the voltmeter and the electric cell are ideal . Find the reading of the voltmeter
13
Nov
In the given circuit , the voltmeter and the electric cell are ideal . Find the reading of the voltmeter In the given circuit the voltmeter and the electric cell are ideal . Find the reading of the voltmeter November 13, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,
Equivalent weight of H2O2 is (a) 17 (b) 34 (c) 68 (d) 18
13
Nov
Equivalent weight of H2O2 is (a) 17 (b) 34 (c) 68 (d) 18 Equivalent weight of H2O2 is (a) 17 (b) 34 (c) 68 (d) 18 November 13, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,
The strength in volumes of a solution containing 30.36 g/litre of H2O2 is (a) 10 volume (b) 20 volume (c) 5 volume (d) None of these
13
Nov
The strength in volumes of a solution containing 30.36 g/litre of H2O2 is (a) 10 volume (b) 20 volume (c) 5 volume (d) None of these The strength in volumes of a solution containing 30.36 g/litre of H2O2 is (a) 10 volume (b) 20 volume (c) 5 volume (d) None of these November 13, 2020 [...]
Figure shows a balanced Wheatstone net. Now, it is disturbed by changing P to 11 ω. Which of the following steps will not bring the bridge to balance again?
13
Nov
Figure shows a balanced Wheatstone net. Now, it is disturbed by changing P to 11 ω. Which of the following steps will not bring the bridge to balance again? Figure shows a balanced Wheatstone net. Now it is disturbed by changing P to 11 ω. Which of the following steps will not bring the bridge [...]