MCQ
If cathode rays are projected at right angles to a magnetic field, their trajectory is
- AEllipse
- ✓Circle
- CParabola
- DNone of these
✓
Answer
Correct option: B.
Circle
Circle
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
A milli voltmeter of $25\,millivolt$ range is to be converted in to an ammeter of $25\,A$ range. The value (in $ohm$) of necessary shunt will be
→Which of the following atoms has the lowest ionization potential
The time period of a bar magnet suspended horizontally in the earth's magnetic field and allowed to oscillate
The current flowing in a copper voltameter is 3.2 A. The number of copper ions $\left(\mathrm{Cu}^{2+}\right)$ deposited at the cathode per minute is
→$A$ battery is of $\mathrm{emf}$ $E$ is being charged from a charger such that positive terminal of the battery is connected to terminal $A$ of charger and negative terminal of the battery is connected to terminal $B$ of charger. The internal resistance of the battery is $r$.
→Two parallel plates separated by a distance of $5\,mm$ are kept at a potential difference of $50\,V.$ A particle of mass ${10^{ - 15}}\,kg$ and charge ${10^{ - 11}}\,C$ enters in it with a velocity ${10^7}\,m/s.$ The acceleration of the particle will be
→In the circuit, the reading of the ammeter is (assume internal resistance of the battery be zero)
When radiation of wavelength $\lambda$ is used to illuminate a metallic surface, the stopping potential is $V.$ When the same surface is illuminated with radiation of wavelength $3 \lambda,$ the stopping potential is $\frac{ V }{4} .$ If the threshold wavelength for the metallic surface is $n \lambda$ then value of $n$ will be......
→When light is incident on a diffraction grating the zero order principal maximum will be
There are certain material developed in laboratories which have a negative refractive index (Fig). A ray incident from air (medium 1) into such a medium (medium 2) shall follow a path given by:
