MCQ
Radio waves and visible light in vacuum have
- ✓Same velocity but different wavelength
- BContinuous emission spectrum
- CBand absorption spectrum
- DLine emission spectrum
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Assertion $A$ : When a body is projected at an angle $45^{\circ}$, it's range is maximum.
Reason $R$ : For maximum range, the value of $\sin 2 \theta$ should be equal to one.
In the light of the above statements, choose the correct answer from the options given below :
[Take the value of speed of light $c,$ as $3 \times 10^{8}$ $\left. ms ^{-1}\right]$
