MCQ
$X-$rays of $\lambda=1 \mathrm{A}^0$ have frequency
- A$3 \times 10^8 \mathrm{~Hz}$
- ✓$3 \times 10^{18} \mathrm{~Hz}$
- C$3 \times 10^{10} \mathrm{~Hz}$
- D$3 \times 10^{15} \mathrm{~Hz}$
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.