Two identical charged spheres are suspended by strings of equal lengths.The strings make an angle of `30^(@)` with each other.When suspended in a liquid of density `1gcm^(-3)` ,the angle remains the same.If density of the material of the sphere is `4/3``gcm^(-3)` the dielectric constant of the liquid is:-

(1) 4

(2) 3

(3)2

(4) 1

Two identical charged spheres are suspended by strings of equal lengths. The strings make an angle of 30^@ with each other. When suspended in a liquid of density 0.8gcm^-3 , the angle remains the same. If density of the material of the sphere is 1.6gcm^-3 , the dielectric constant of the liquid is

Two identical charged spheres are suspended by strings of equal lengths. The strings make an angle of 30^@ with each other. When suspended in a liquid of density 0.8gcm^-3 , the angle remains the same. If density of the material of the sphere is 1.6gcm^-3 , the dielectric constant of the liquid is

Two identical charged spheres of material density rho , suspended from the same point by inextensible strings of equal length make an angle theta between the string. When suspended in a liquid of density sigma the angle theta remains the same. The dielectric constant K of the liquid is

In a liquid medium of dielectric constant K and of specific gravity 2, two identically charged spheres are suspended from a fixed point by threads of equal lengths. The angle between them is 90^(@) . In another medium of unknown dielectric constant K^(1) , and specific gravity 4, the angle between them becomes 120^(@) . If density of material of spheres is 8gm/cc then find K^(1) .

Two identical balls each having a density rho are suspended from as common point by two insulating strings of equal length. Both the balls have equal mass and charge. In equilibrium each string makes an angle theta with vertical. Now, both the balls are immersed in a liquid. As a result the angle theta does not change. The density of the liquid is sigma . Find the dielectric constant of the liquid.

Two identical balls each having a density rho are suspended from as common point by two insulating strings of equal length. Both the balls have equal mass and charge. In equilibrium each string makes an angle theta with vertical. Now, both the balls are immersed in a liquid. As a result the angle theta does not change. The density of the liquid is sigma . Find the dielectric constant of the liquid.

A bob of mass 1 kg is suspended from an inextensible string of length 1 m. When the string makes an angle 60^(@) with vertical, speed of the bob is 4 m/s Net acceleration of the bob at this instant is

If the error in measuring the radius of the sphere is 2% and that in measuring its mass is 3%, Then the error in measuring the density of material of the sphere is:

Two identical pith balls, each carrying charge q, are suspended from a common point by two strings of equal length l. Find the mass of each ball if the angle between the strings is 2theta in equilibrium.

Two indentical pith balls, each carrying charge q, are suspended from a common point by two strings of equal length l. Find the mass of each ball if the angle between the strings is 2theta in equilibrium.