Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions)
In third row of periodic table from Na to Cl (a) Electronegativity increases (b) Electronegativity decreases (c) Ionisation energy decreases
10
Nov
In third row of periodic table from Na to Cl (a) Electronegativity increases (b) Electronegativity decreases (c) Ionisation energy decreases In third row of periodic table from Na to Cl (a) Electronegativity increases (b) Electronegativity decreases (c) Ionisation energy decreases November 10, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,
With respect to chlorine, hydrogen will be (a) Electropositive (b) Electronegative (c) Neutral (d) None of the above
10
Nov
With respect to chlorine, hydrogen will be (a) Electropositive (b) Electronegative (c) Neutral (d) None of the above hydrogen will be (a) Electropositive (b) Electronegative (c) Neutral (d) None of the above With respect to chlorine November 10, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,
It is desired to make a 20 Ω coil of wire, which has a zero thermal coefficient of resistance. To do this, a carbon resitor fo resistane R1 is placed in series with an iron resistor of resistance R2 the proportions of iron and carbon are so chosen that R1+R2=20Ω for all temperatures near 20∘C. How long are R1 and R2? αcarbon =− 0.5 × 10^−3.∘ C−1 , α iron = 5×10^−3.∘C(−1)
10
Nov
It is desired to make a 20 Ω coil of wire, which has a zero thermal coefficient of resistance. To do this, a carbon resitor fo resistane R1 is placed in series with an iron resistor of resistance R2 the proportions of iron and carbon are so chosen that R1+R2=20Ω for all temperatures near 20∘C. [...]
A conductive wire has resistance of 10 ohm at 0 degree C and alpha is 1/273 degree C , then determine its resistance at 273 degree C.
10
Nov
A conductive wire has resistance of 10 ohm at 0 degree C and alpha is 1/273 degree C , then determine its resistance at 273 degree C. A conductive wire has resistance of 10 ohm at 0 degree C and alpha is 1/273 degree C then determine its resistance at 273 degree C. November 10, [...]
Going from fluorine to chlorine, bromine and iodine, the electronegativity (a) Increases (b) Decreases (c) First decreases then increases
10
Nov
Going from fluorine to chlorine, bromine and iodine, the electronegativity (a) Increases (b) Decreases (c) First decreases then increases bromine and iodine Going from fluorine to chlorine the electronegativity (a) Increases (b) Decreases (c) First decreases then increases November 10, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,
The V- I graph for a metallic wire at two different temperatures T1 and T2 is shown in figure. Which of the two temperatures T1 and T2 is higher and Why ?
10
Nov
The V- I graph for a metallic wire at two different temperatures T1 and T2 is shown in figure. Which of the two temperatures T1 and T2 is higher and Why ? The V- I graph for a metallic wire at two different temperatures T1 and T2 is shown in figure. Which of the two [...]
Which element has the highest electronegativity (a) C (b) Mg (c) O (d) s
10
Nov
Which element has the highest electronegativity (a) C (b) Mg (c) O (d) s Which element has the highest electronegativity (a) C (b) Mg (c) O (d) s November 10, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,
On going from right to left in a period in the periodic table the electronegativity of the elements (a) Increases (b) Decreases (c) Remain unchanged
10
Nov
On going from right to left in a period in the periodic table the electronegativity of the elements (a) Increases (b) Decreases (c) Remain unchanged On going from right to left in a period in the periodic table the electronegativity of the elements (a) Increases (b) Decreases (c) Remain unchanged November 10, 2020 Category: Uncategorised [...]
The following table gives the length of three copper rods, their diameters, and the potential differences between their ends. Rank the rods according to (a) the magnitude of the electric field within them, (b) the current density within them, and (c ) the drift speed of electrons through them, greates first.
10
Nov
The following table gives the length of three copper rods, their diameters, and the potential differences between their ends. Rank the rods according to (a) the magnitude of the electric field within them, (b) the current density within them, and (c ) the drift speed of electrons through them, greates first. (b) the current density [...]
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(b) the current density within them ,
and (c ) the drift speed of electrons through them ,
and the potential differences between their ends. Rank the rods according to (a) the magnitude of the electric field within them ,
greates first. ,
The following table gives the length of three copper rods ,
their diameters ,
In the following, the element with the highest electropositivity is (a) Copper (b) Cesium (c) Barium (d) Chromium
10
Nov
In the following, the element with the highest electropositivity is (a) Copper (b) Cesium (c) Barium (d) Chromium In the following the element with the highest electropositivity is (a) Copper (b) Cesium (c) Barium (d) Chromium November 10, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,