Physics 2nd Paper MCQ-Combined All Board-2018

1. If the phase difference of two points of a wave is $3 \pi$, then the path difference is-

2. Who gives the formala $E_{\lambda} \propto T ?$

3. The ratio of two molar specific heat of a gas is constant. This constant is indicated by the symbol-

4. The resistance of a wire is $2 \Omega$. Keeping the material same, if the length of the wire is doubled, then what will be the new resistance?

For which gate the truth table is applicable?