Ray Optics and Optical Instruments

Related Questions

• An achromatic prism is made by combining two prisms ${{P}_{1}}({{\mu }_{v}}=1.523,\,{{\mu }_{r}}=1.515)$ and ${{P}_{2}}({{\mu }_{v}}=1.666,\,{{\mu }_{r}}=1.650)$; where $\mu $ represents the refractive index. If the angle of the prism ${{P}_{1}}$ is 10°, then the angle of the prism $P_2$ will be

  ---

• A convex lens, a glass slab, a glass prism and a solid sphere all are made of the same glass, the dispersive power will be

  ---

• Image formed by a convex mirror is

  ---

• A concave mirror of focal length $f$ (in air) is immersed in water ($\mu = 4/3$). The focal length of the mirror in water will be

  ---

• If critical angle for a material to air is $30^o$, the refractive index of the material will be

  ---