MCQ
The particle that possesses half integral spin as
- APhoton
- BPion
- ✓Proton
- D$K-$ meson
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${V}_{{m}}({t})=10 \sin \left(2 \pi \times 10^{5} {t}\right)$ $volts$ and
Carrier signal
${V}_{{c}}({t})=20 \sin \left(2 \pi \times 10^{7} {t}\right)$ $volts$
The modulated signal now contains the message signal with lower side band and upper side band frequency, therefore the bandwidth of modulated signal is $\alpha\, {kHz}$. The value of $\alpha$ is :

Statement$-II :$ The $n-$type semiconductor has net negative charge.
In the light of the above statements, choose the most appropriate answer from the options given below:
