[" 39."(2.4times10^(3))-:(8times10^(-2))" aplap "vec q],[[" (a) "3times10^(5)," (b) "3times10^(4)],[" (c) "3times10^(-5)," (d) "30]]

[" Calculate the wavelength in "],[" nanometers of a quantum of light "],[" with frequency of "8times10^(15)s^(-1)" .The "],[" given value of Planck's constant is "],[6.63times10^(-34)Js" .The velocity of light is "],[3.0times10^(8)ms^(-1)" ."],[[" (A) "3.2times10^(7)," (B) "2.5times10^(-25)],[" (C) "5times10^(-18)," 40"]]

[" 8.The dielectric strength of the air is about "-],[[" (A) "3times10^(6)v/m" (B) "3times10^(4)v/m],[" (C) "3times10^(2)v/m," (D) "3times10^(3)v/m]]

K_(sp) of the salt AB_(2) at 298 K is 4 times 10^(-11)M . A precipitate of AB_(2) is formed when equal volumes of which of the following solutions of A^(2+) and B^(-) are mixed? A) 2 times 10^(-4)M" "A^(2+) and 2 times 10^(-4)M" "B^(-)" B) 2 times 10^(-5)M" "A^(2+) and 2 times 10^(-3)M" "B^(-) C) 2 times 10^(-2)M" "A^(2+) and 2 times 10^(-3)M" "B^(-)

2Litres of an aqueous solution is prepared containing initially 10^(-3) moles of MgCl_(2) and 10^(-3) moles of "NaF" .Find concentration of F^(-) ions in the solution at equlibrium. Given : Ksp [MgF_(2)] = 4times10^(-11) (A) 2times10^(-4)M (B) 4times10^(-4)M (C) 5times10^(-4)M (D) 8times10^(-4)M

Simplify: 10^(-1)times10^(2)times10^(-3)times10^(4)times10^(-5)times10^(6)

There are 10 turns in coil M and 15 turns in coil N .If a current of 2A is passed through coil M then the flux linked with coil N is 1.8times10^(-3)Wb .If a current of 3A is passed through coil N then flux linked with coil M is : (A) 1.2times10^(-3)Wb (B) 2.7times10^(-3)Wb (C) 1.8times10^(-3)Wb (D) 4.05times10^(-3)Wb

[[(-8)times(-7)]-:[(-10)+(-4)]]

Magnetic susceptibility of magnesium at 300K of temperature is 1.2times10^(-5) ,the magnetic susceptibility of magnesium at 30 K of temperature will be 1.2times10^(-3) 1.2times10^(-4) 1.2times10^(-5) 1.2times10^(4)