Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions)
Figure shows a simple potentiometer circuit for measuring a small emf produced by a thermocouple.
13
Nov
Figure shows a simple potentiometer circuit for measuring a small emf produced by a thermocouple. Figure shows a simple potentiometer circuit for measuring a small emf produced by a thermocouple. November 13, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,
In which of the following arrangements of resistors does the meter M, which has a resistance of 2Ω, give the largest reading when the same potential difference is applied between points P and Q?
13
Nov
In which of the following arrangements of resistors does the meter M, which has a resistance of 2Ω, give the largest reading when the same potential difference is applied between points P and Q? give the largest reading when the same potential difference is applied between points P and Q? In which of the following [...]
Figure shows a circuit that may be used to compare the resistance R of an unknown resistor with a 100 Ω standard. The distance l from one end of the potentiometer slider wire to the balance point are 400 mm and 588 mm when X is connected to Y and Z, respectively. The length of the slide wire is 1.00 m. What is the value of resistance R?
13
Nov
Figure shows a circuit that may be used to compare the resistance R of an unknown resistor with a 100 Ω standard. The distance l from one end of the potentiometer slider wire to the balance point are 400 mm and 588 mm when X is connected to Y and Z, respectively. The length of [...]
The reaction of H2S + H2O2 to S + 2H2O manifists (a) Acidic nature of H2O2 (b) Alkaline nature of H2O2 (c) Oxidizing nature of H2O2
13
Nov
The reaction of H2S + H2O2 to S + 2H2O manifists (a) Acidic nature of H2O2 (b) Alkaline nature of H2O2 (c) Oxidizing nature of H2O2 The reaction of H2S + H2O2 to S + 2H2O manifists (a) Acidic nature of H2O2 (b) Alkaline nature of H2O2 (c) Oxidizing nature of H2O2 November 13, 2020 [...]
A constant 60 V dc supply is connected across two resistors of resistance 400 kΩ and 200 kΩ. What is the reading of the voltmeter, also of resistance 200 kΩ, when connected across the second resistor as shows in Fig. ?
13
Nov
A constant 60 V dc supply is connected across two resistors of resistance 400 kΩ and 200 kΩ. What is the reading of the voltmeter, also of resistance 200 kΩ, when connected across the second resistor as shows in Fig. ? A constant 60 V dc supply is connected across two resistors of resistance 400 [...]
Na2O2 is produced in reaction between H2O2 and NaOH. Here the role of H2O2 is (a) As an oxidising agent (b) As an acid (c) As a base (d) As a reducing agent
13
Nov
Na2O2 is produced in reaction between H2O2 and NaOH. Here the role of H2O2 is (a) As an oxidising agent (b) As an acid (c) As a base (d) As a reducing agent Na2O2 is produced in reaction between H2O2 and NaOH. Here the role of H2O2 is (a) As an oxidising agent (b) As [...]
The emf of the driver cell of a potentiometer is `2 V`, and its internal resistance is negligible. The length of the potentiometer wire is `100 cm`, and resistance is `5 omega`. How much resistance is to be connected in series with the potentiometer wire to have a potential gradient of `0.05 m V cm^(-1)`?
13
Nov
The emf of the driver cell of a potentiometer is `2 V`, and its internal resistance is negligible. The length of the potentiometer wire is `100 cm`, and resistance is `5 omega`. How much resistance is to be connected in series with the potentiometer wire to have a potential gradient of `0.05 m V cm^(-1)`? [...]
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and its internal resistance is negligible. The length of the potentiometer wire is `100 cm` ,
and resistance is `5 omega`. How much resistance is to be connected in series with the potentiometer wire to have a potential gradient of `0.05 m V cm^(-1)`? ,
The emf of the driver cell of a potentiometer is `2 V` ,
In O2 and H2O2, the O – O bond lengths are 1.21 and 1.48 A respectively. In Ozone, the average O -O bond length is (a) 1.28 A (b) 1.18 A (c) 1.44 A (d) 1.52 A
13
Nov
In O2 and H2O2, the O – O bond lengths are 1.21 and 1.48 A respectively. In Ozone, the average O -O bond length is (a) 1.28 A (b) 1.18 A (c) 1.44 A (d) 1.52 A In O2 and H2O2 the average O -O bond length is (a) 1.28 A (b) 1.18 A (c) [...]
In transforming 0.01 mole of PbS to PbSO4 the volume of ’10 volume’ H2O2 required will be (a) 11.2 ml (b) 22.4 ml (c) 33.6 ml (d) 44.8 ml
13
Nov
In transforming 0.01 mole of PbS to PbSO4 the volume of ’10 volume’ H2O2 required will be (a) 11.2 ml (b) 22.4 ml (c) 33.6 ml (d) 44.8 ml In transforming 0.01 mole of PbS to PbSO4 the volume of '10 volume' H2O2 required will be (a) 11.2 ml (b) 22.4 ml (c) 33.6 ml [...]
Blackened oil painting can be restored into original form by the action of (a) Chlorine (b) BaO2 (c) H2O2 (d) MnO2
13
Nov
Blackened oil painting can be restored into original form by the action of (a) Chlorine (b) BaO2 (c) H2O2 (d) MnO2 Blackened oil painting can be restored into original form by the action of (a) Chlorine (b) BaO2 (c) H2O2 (d) MnO2 November 13, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP [...]