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Sahay Sir > Question Answers > NCERT Exemplar Class 12 > Physics > Chapter 9 - Ray Optics and Optical Instruments > A prism is made of glass of unknown refractive index. A parallel beam of light incident on a face of the prism. By rotating the prism, the angle of minimum deviation is measured to be 40^o. What is the refractive index of the material of the prism? The refracting angle of the prism is 60 degree. If the prism is placed in water (refractive index 1.33), predict the new angle of minimum deviation of a parallel beam of light. The refracting angle of the prism is 60^o.

A prism is made of glass of unknown refractive index. A parallel beam of light incident on a face of the prism. By rotating the prism, the angle of minimum deviation is measured to be 40^o. What is the refractive index of the material of the prism? The refracting angle of the prism is 60 degree. If the prism is placed in water (refractive index 1.33), predict the new angle of minimum deviation of a parallel beam of light. The refracting angle of the prism is 60^o.

A mass attached to a spring is free to oscillate A prism is made of glass of unknown refractive index. A parallel beam of light incident on a face of the prism. By rotating the prism A small candle In Millikan's oil drop experiment The cylindrical tube of a spray pump has a cross-section of 8.0 cm^2 one end of which has 40 fine holes each of diameter 1.0 mm. If the liquid flow inside the tube is 1.5 m min^−1 Two narrow bores of diameters 3.0mm and 6.0 mm are joined together to form a U-shaped tube open at both ends. If the U-tube contains water what is the speed of ejection of the liquid through the holes ? with angular velocity ω