MCQ
With the decrease in the wave length of the incident radiation the velocity of the photoelectrons emitted from a given metal
- ARemains same
- ✓Increases
- CDecreases
- DIncreases first and then decreases
As wavelength decrease, frequency increases and hence $K.E$ of photoelectrons increases, thereby increasing the velocity.
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Match the paths in List $I$ with conditions of refractive indices in List $II$ and select the correct answer using the codes given below the lists :
| List $I$ | List $II$ |
| $P$. $\quad e \rightarrow f$ | $1.$ $\quad \mu_1>\sqrt{2} \mu_2$ |
| $Q.$ $\quad e \rightarrow g$ | $2.$ $\quad \mu_1>\mu_1$ and $\mu_2>\mu_3$ |
| $R.$ $\quad e \rightarrow h$ | $3.$ $\quad \mu_1=\mu_2$ |
| $S.$ $\quad e \rightarrow i$ | $4.$ $\quad \mu_2<\mu_1<\sqrt{2} \mu_2$ and $\mu_2>\mu_3$ |
Codes: $\quad \quad P \quad Q \quad R \quad S $ 