Home
Class 12
PHYSICS
Electrons move at right angles to a magn...

Electrons move at right angles to a magnetic field of `1.5xx10^(-2)` Tesla with a speed of `6xx10^(7)m//s`. If the specific charge of the electron is `1.7xx10^(11)C//kg`. The radius of the circular path will be

A

2.9 cm

B

3.9 cm

C

2.35 cm

D

3 cm

Text Solution

Verified by Experts

The correct Answer is:
C
`r = (mv)/(qB) = (v)/((q/m) B) = (6 xx 10^(7))/(1 xx 10^(11) xx 1.5 xx 10^(-2)) = 2.35`cm
Promotional Banner

Similar Questions

Explore conceptually related problems

A beam of ions with velocity 2xx 10^(5) m/s enters normally into a uniform magnetic field of 4 xx 10^(-2) T. if the specific charge to the ions is 5xx 10^(7) C/kg, the radius of the circular path described will be

The specific charge of a proton is 9.6xx10^(7)"C kg"^(-1) . The specific charge of an alpha particle will be

Maximum velocity of photo electrons is 3.5 xx 10^(6) m//s . If the specific charge of an electron is 1.75 xx 10^(11) C/kg, stopping potential of the electron is

The electron in a hydrogen atom moves in circular orbit of radius 5xx10^(-11)m with a speed of 0.6pixx10^(6)m//s then

A beam of protons enters a uniform magnetic field of 0.3 tesla with a velocity of 4xx10^(5) m/s at an angle of 60º to the field. Then, (Mass of the proton =1.7 xx10^(-27) kg.) (1) the radius of the helical path is 1.226 xx 10^(-2) m (2) the pitch of the helix is 4.45 xx 10^(-2) m (3) the radius of the helical path is 1.226 xx 10^(-3) m (4) the pitch of the helix is 4.45xx10^(-4) m

Maximum velocity of photoelectrons emitted by a metal surface is 1.2xx10^(6)m//s . Assuming the specific charge of the electrons to be 1.8xx10^(11)C//kg the value of stopping potential in volt will be:

A beam of ions with velocity 2xx10^5ms^-1 enters normally into a uniform magnetic field of 0*04 tesla. If the specific charge of ion is 5xx10^7Ckg^-1 , find the radius of the circular path described.

If the electronic charge e=1.6xx10^(-19)C and the specific charge e/m off electron is 1.76xx10^(11)C(kg)^(-1) then calculate the mass m of the electron.

A proton of mass 1.67 xx 10^(-27) kg and charge 1.6 xx 10^(-19) C is shot a uniform magnetic field, and perpendicular to the field with a velocity 5 xx 10^(6) m//s . If the magnetic induction of the field is 1 tesla, find (i) The radius of the circular path

An alpha - particle with a specific charge of 2.5xx10^7 Ckg^(-1) moves with a speed of 2xx10^5 ms ^(-1) in a perpendicular magnetic field of 0.05 T. Then , the radius of the circular path described by it is