MCQ
Two parallel beams of electrons moving in the same direction produce a mutual force
- AOf attraction in plane of paper
- ✓Of repulsion in plane of paper
- CUpwards perpendicular to plane of paper
- DDownwards perpendicular to plane of paper
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${n}_{1}=1.2+\frac{10.8 \times 10^{-14}}{\lambda^{2}} \text { and } {n}_{2}=1.45+\frac{1.8 \times 10^{-14}}{\lambda^{2}}$
The wavelength for which rays incident at any angle on the interface $B C$ pass through without bending at that interface will be $....\,nm.$
