154057 A bar magnet is equivalent to :

154066 A proton enters a magnetic field of intensity $\mathbf{1 . 5}$ $\mathrm{Wb} / \mathrm{m}^{2}$ with a velocity $2 \times 10^{7} \mathrm{~m} / \mathrm{s}$ in a direction at an angle $30^{\circ}$ with the field. The force on the proton will be (charge on proton is $1.6 \times 10^{-19} \mathrm{C}$ )

153979 The hard ferromagnetic material among the following is

153986 A large magnet is broken into two pieces, so that their lengths are in the ratio $2: 1$. Then, the pole strength of the two pieces will be in the ratio:

154057 A bar magnet is equivalent to :

154066 A proton enters a magnetic field of intensity $\mathbf{1 . 5}$ $\mathrm{Wb} / \mathrm{m}^{2}$ with a velocity $2 \times 10^{7} \mathrm{~m} / \mathrm{s}$ in a direction at an angle $30^{\circ}$ with the field. The force on the proton will be (charge on proton is $1.6 \times 10^{-19} \mathrm{C}$ )

153979 The hard ferromagnetic material among the following is

153986 A large magnet is broken into two pieces, so that their lengths are in the ratio $2: 1$. Then, the pole strength of the two pieces will be in the ratio:

154057 A bar magnet is equivalent to :

154066 A proton enters a magnetic field of intensity $\mathbf{1 . 5}$ $\mathrm{Wb} / \mathrm{m}^{2}$ with a velocity $2 \times 10^{7} \mathrm{~m} / \mathrm{s}$ in a direction at an angle $30^{\circ}$ with the field. The force on the proton will be (charge on proton is $1.6 \times 10^{-19} \mathrm{C}$ )

153979 The hard ferromagnetic material among the following is

153986 A large magnet is broken into two pieces, so that their lengths are in the ratio $2: 1$. Then, the pole strength of the two pieces will be in the ratio:

154057 A bar magnet is equivalent to :

154066 A proton enters a magnetic field of intensity $\mathbf{1 . 5}$ $\mathrm{Wb} / \mathrm{m}^{2}$ with a velocity $2 \times 10^{7} \mathrm{~m} / \mathrm{s}$ in a direction at an angle $30^{\circ}$ with the field. The force on the proton will be (charge on proton is $1.6 \times 10^{-19} \mathrm{C}$ )

153979 The hard ferromagnetic material among the following is

153986 A large magnet is broken into two pieces, so that their lengths are in the ratio $2: 1$. Then, the pole strength of the two pieces will be in the ratio: