Ray Optics and Optical Instruments

Related Questions

• A convex lens

  ---

• If the telescope is reversed i.e. seen from the objective side

  ---

• A person uses a lens of power + 3D to normalise vision. Near point of hypermetropic eye is

  ---

• Material A has critical angle ${{i}_{A}},$ and material B has critical angle ${{i}_{B}}({{i}_{B}}>{{i}_{A}}).$ Then which of the following is true (i) Light can be totally internally reflected when it passes from B to A (ii) Light can be totally internally reflected when it passes from A to B (iii) Critical angle for total internal reflection is ${{i}_{B}}-{{i}_{A}}$ (iv) Critical angle between A and B is ${{\sin }^{-1}}\left( \frac{\sin {{i}_{A}}}{\sin {{i}_{B}}} \right)$

  ---

• A thin prism ${{P}_{1}}$ with angle 6° and made from glass of refractive index 1.54 is combined with another thin prism P2 of refractive index 1.72 to produce dispersion without deviation. The angle of prism ${{P}_{2}}$ will be

  ---