Question
A proton, a deuteron and an α particle are accelerated through same potential difference and then they enter in a normal uniform magnetic field, the ratio of their kinetic energies will be:
✓
Answer
- 1 : 1 : 2
Kinetic energy obtained = qV where q is the charge and V is the potential through which the particle is accelerated.
Also, the force due to the magnetic field is perpendicular to the direction of motion.
So it cant change the speed and consequentially Kinetic energy of the particles will remain same after they enter a normal magnetic field.
In the above problem, V is constant.
So $\text{KE}\propto\text{q}.$
The charges of the proton, deuteron and the alpha particle are in the ratio 1 : 1 : 2
So, their kinetic energies are in the ratio 1 : 1 : 2
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Two similar coils are kept mutually perpendicular such that their centres coincide. At the centre, find the ratio of the magnetic field due to one coil and the resultant magnetic field by both coils, if the same current is flown
In the figure a capacitor is filled with dielectrics. The resultant capacitance is
Assertion : The whole charge of a conductor cannot be transferred to another isolated conductor.
Reason : The total transfer of charge from one to another is not possible.(a) If both assertion and reason are true and the reason is the correct explanation of the assertion.(b) If both assertion and reason are true but reason is not the correct explanation of the assertion.(c) If assertion is true but reason is false.(d) If the assertion and reason both are false.
Reason : The total transfer of charge from one to another is not possible.(a) If both assertion and reason are true and the reason is the correct explanation of the assertion.(b) If both assertion and reason are true but reason is not the correct explanation of the assertion.(c) If assertion is true but reason is false.(d) If the assertion and reason both are false.
The frequency of incident light falling on a photosensitive metal plate is doubled, the kinetic energy of the emitted photoelectrons is.
A wire of length L carrying current i is placed perpendicular to the magnetic induction B. The total force on the wire is
The momentum in mechanics is expressed as m × v. The analogous expression in electricity is(a) I × Q (b) I × V (c) L × I (d) L × Q
Atomic weight of boron is $10.81$ and it has two isotopeses $5^{8^{10}}$ and $5^{8^{11}}$. Then ratio of $5^{8^{10}}: 5^{8^{11}}$ in nature would be
→What happens to the force between magnetic poles when their pole strength and the distance between them are both doubled(a) Force increases to two times the previous value(b) No change(c) Force decreases to half the previous value(d) Force increases to four times the previous value
A moving coil galvanometer has a resistance of 50 Ω and gives full scale deflection for 10 mA. How could it be converted into an ammeter with a full scale deflection for 1A(a) 50/99 Ω in series(b) 50/99 Ω in parallel(c) 0.01 Ω in series(d) 0.01 Ω in parallel
The following truth table is for: ABY 110 101 011 001