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The surface energy of a liquid drop is E. It is sprayed into 1000 equal droplets. Then its surface energy becomes
15
Sep
The surface energy of a liquid drop is E. It is sprayed into 1000 equal droplets. Then its surface energy becomes The surface energy of a liquid drop is E. It is sprayed into 1000 equal droplets. Then its surface energy becomes September 15, 2020 Category: Cengage JEE Mains Physics by B.M Sharma , Chapter [...]
Work W is required to form a bubble of volume V from a given solution. What amount of work is required to be done to form a bubble of volume 2V ?
15
Sep
Work W is required to form a bubble of volume V from a given solution. What amount of work is required to be done to form a bubble of volume 2V ? Work W is required to form a bubble of volume V from a given solution. What amount of work is required to be [...]
A hollow sphere has a small hole in it. On lowering the sphere in a tank of water, it is observed that water enters into the hollow sphere at a depth of 40 cm below the surface. Surface tension of water is 7×10^−2 N/m. The diameter of the hole is
15
Sep
A hollow sphere has a small hole in it. On lowering the sphere in a tank of water, it is observed that water enters into the hollow sphere at a depth of 40 cm below the surface. Surface tension of water is 7×10^−2 N/m. The diameter of the hole is A hollow sphere has a [...]
Two point charges +q and -2q are fixed on the x axis at positions a and 2a from origins respectively. At what positions on the axis, the resultant electric field is zero?
15
Sep
Two point charges +q and -2q are fixed on the x axis at positions a and 2a from origins respectively. At what positions on the axis, the resultant electric field is zero? the resultant electric field is zero? Two point charges +q and -2q are fixed on the x axis at positions a and 2a [...]
If C (the velocity of light) g, (the acceleration due to gravity), and P (the atmospheric pressure) are the fundamental quantities in MKS system, then the dimensions of length will be same as that of
15
Sep
If C (the velocity of light) g, (the acceleration due to gravity), and P (the atmospheric pressure) are the fundamental quantities in MKS system, then the dimensions of length will be same as that of (the acceleration due to gravity) and P (the atmospheric pressure) are the fundamental quantities in MKS system If C (the [...]
The frequency f of vibrations of mass m suspended from a spring of spring constant k is given by f = Cm^xk^y, where C is a dimensionless constant. The values of x and y are, respectively,
15
Sep
The frequency f of vibrations of mass m suspended from a spring of spring constant k is given by f = Cm^xk^y, where C is a dimensionless constant. The values of x and y are, respectively, respectively The frequency f of vibrations of mass m suspended from a spring of spring constant k is given [...]
The angle of contact between glass and water is 0o and it rises in a capillary upto 6 cm when its surface tension is 70 dyn/cm. Another liquid of surface tension 140 dyn/cm, angle of contact 60 degree and relative density 2 will rise in the same capillary up to
15
Sep
The angle of contact between glass and water is 0o and it rises in a capillary upto 6 cm when its surface tension is 70 dyn/cm. Another liquid of surface tension 140 dyn/cm, angle of contact 60 degree and relative density 2 will rise in the same capillary up to angle of contact 60 degree [...]
Two charges each equal to ηq(η−1<3–√) are placed at the corners of an equilateral triangle of side a. The electric field at the third corner is E3 where ( E0= q/4πε0a2)
15
Sep
Two charges each equal to ηq(η−1<3–√) are placed at the corners of an equilateral triangle of side a. The electric field at the third corner is E3 where ( E0= q/4πε0a2) Two charges each equal to ηq(η−1<3–√) are placed at the corners of an equilateral triangle of side a. The electric field at the third [...]
Of the following quantities, which one has the dimensions different from the remaining three? a. Energy density b. Force per unit area c. Product of charge
15
Sep
Of the following quantities, which one has the dimensions different from the remaining three? a. Energy density b. Force per unit area c. Product of charge Of the following quantities which one has the dimensions different from the remaining three? a. Energy density b. Force per unit area c. Product of charge September 15, 2020 [...]
The bob of a pendulum of mass 8 μg carries an electric charge of 39.2 × 10^−10 coulomb in an electric field of 20×103 volt/meter and it is at rest. The angle made by the pendulum with the vertical will be
15
Sep
The bob of a pendulum of mass 8 μg carries an electric charge of 39.2 × 10^−10 coulomb in an electric field of 20×103 volt/meter and it is at rest. The angle made by the pendulum with the vertical will be Consider the four field patterns shown. Assuming there are no charges in the regions [...]