Physics Practice: Refraction at Plane Surfaces (Mock Test 2 - Intermediate)
1. A ray of light travels from glass to air. If the angle of incidence is $30^{\circ}$ and the refractive index of glass is $1.5$, the sine of the angle of refraction is:
2. The "Real Depth" of a swimming pool is $4 \text{ m}$. If the refractive index of water is $4/3$, its apparent depth will be:
3. For a ray of light passing through a prism, the angle of deviation ($\delta$) is given by the formula:
4. When a ray of light passes through a parallel-sided glass slab, the emergent ray is shifted sideways. This shift is known as:
5. Which factor among these does NOT affect the refractive index of a medium?
6. A coin appears raised when placed at the bottom of a beaker filled with water. This "Normal Shift" depends on:
7. The refractive index of diamond is $2.42$. What is the speed of light in diamond? ($c = 3 \times 10^8 \text{ m/s}$)
8. For a ray of light in a prism, at the position of minimum deviation:
9. Light of which color has the highest refractive index in glass?
10. If a ray of light enters from air to glass, its frequency:
11. A glass slab is placed over different colored letters. Which letter appears to be raised the most?
12. The refractive index of medium 2 with respect to medium 1 is given by:
13. In a prism, the angle between two refracting surfaces is called the:
14. If the angle of the prism is $60^{\circ}$ and the angle of minimum deviation is $38^{\circ}$, the angle of incidence is:
15. A pencil dipped partially in water appears bent at the surface because:
16. The speed of light in air is $3 \times 10^8 \text{ m/s}$ and in a certain liquid it is $2.5 \times 10^8 \text{ m/s}$. The refractive index of the liquid is:
17. For a glass slab of thickness $t$ and refractive index $\mu$, the normal shift is given by:
18. The refractive index of air is approximately:
19. In refraction, if $\mu_{21}$ is the refractive index of medium 2 w.r.t. 1, then $\mu_{12}$ is:
20. Which principle is used to show that a ray of light follows the same path even if its direction is reversed?
