ObjectiveMcq
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Browse the question list for Physics in RRB JE ECE 2025.
2 questions · Page 1 of 1
In a P-N junction diode, which condition allows current to flow easily?
Reverse bias
Zero bias
Forward bias
Both forward and reverse bias
In forward bias, the external voltage reduces the potential barrier, allowing significant current to flow through the diode.
When a ray of light travels from a denser medium to a rarer medium, it bends:
Towards the normal
Away from the normal
Along the normal
No bending occurs
When light travels from denser to rarer medium, the refracted ray bends away from the normal because speed increases. This follows Snell's law: .
