MCQ
The temperature at which a liquid gets converted into its vapour state is called its………………………
- Amelting point
- ✓boiling point
- Cdew point
- Dfreezing point
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A ray of light travels from air into a glass block as shown. It makes an angle of 30° with the surface of the block. If the refractive index of the glass is 1.5, what will be the angle of refraction?
