MCQ
Total internal reflection of light is possible when light enters from
- AAir to glass
- BVacuum to air
- CAir to water
- ✓Water to air
✓
Answer
Correct option: D.
Water to air
For total internal reflection light must travel from denser medium to rarer medium.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
From the following displacement-time graph find out the velocity of a moving body
Magnetic dipole moment is a
When two soap bubbles of radius $r_1$ and $r_2\left(r_2>r_1\right)$ coalesce, the radius of curvature of common surface is
→The shortest wavelength of X-rays emitted from an X-ray tube depends on the
The composition of two simple harmonic motions of equal periods at right angle to each other and with a phase difference of $\pi$ results in the displacement of the particle along
→The radius of a circular ring of wire is $R$ and it carries a current of $I\,ampere$. At its centre a smaller ring of radius $r$ with current $i$ and $N\, turns$ is placed. Assuming that the planes of two rings are perpendicular to each other and the magnetic induction produced at the centre of bigger ring is constant, then the torque acting on smaller ring will be
→An ideal gas heat engine operates in Carnot cycle between $227^{\circ} \mathrm{C}$ and $127^{\circ} \mathrm{C}$. It absorbs $6 \times 10^4 \mathrm{cals}$ of heat at higher temperature. Amount of heat converted to work is
→Figures $1,11,111$ and $IV$ depict variation of force with time
→| i |
| ii |
|
| iii |
| iv |
|
The impulse is highest in the case of situations depicted. Figure
A vector $\vec{A}$ points vertically upward and $\vec{B}$ points towards north. The vector product $\vec{A} \times \vec{B}$ is
→A car of mass $1250 \mathrm{~kg}$ is moving at $30 \mathrm{~m} / \mathrm{s}$. Its engine delivers $30 \mathrm{~kW}$ while resistive force due to surface is $750\ N$. What max acceleration can be given in the car
→