A stream of electrons and protons are directed towards a narrow slit in a screen (see figure). The intervening regionhas a uniform electric field E^{\to}(vertically downwards) and a uniform magnetic field B^{\to}(out of the plane of the figure) asshown. Then

electrons and protons with speed {|E^{\to}|}/{|B^{\to}|} will pass through the slit

protons with speed {|E^{\to}|}/{|B^{\to}|} will pass through the slit, electrons of the same speed will not

neither electrons nor protons will go through the slit irrespective of their speed

electrons will always be deflected upwards irrespective of their speed

WBJEE 2014 Physics Solved Paper

Question : 58 of 60

Marks: +1, -0

A stream of electrons and protons are directed towards a narrow slit in a screen (see figure). The intervening regionhas a uniform electric field

→

(vertically downwards) and a uniform magnetic field

→

(out of the plane of the figure) asshown. Then

electrons and protons with speed
|
→
E
|
|
→
B
|
will pass through the slit
protons with speed
|
→
E
|
|
→
B
|
will pass through the slit, electrons of the same speed will not
neither electrons nor protons will go through the slit irrespective of their speed
electrons will always be deflected upwards irrespective of their speed

Go to Question:

Prev Question

Next Question