Physics
(a) Refractive index of glass with respect to water is . Find the refractive index of water with respect to glass. (b) Name the principle used to find the value in part (a). (c) If we change the temperature of water,then will the ratio remain the same? Write yes or no.
Related Questions
Below is an incomplete table showing the arrangement of electromagnetic spectrum in the increasing order of their wavelength. Complete the table.
Gamma ray X – ray U V rays Visible rays Infrared A Radio waves (a) Identify the radiation A.
(b) Name the radiation used to detect fracture in bones.
(c) Name one property common to both A and Radio waves.
(a) Why do we use red colour as a danger signal on the top of a skyscraper?
(b) The diagram below shows the path of a blue ray through the prism :
- Calculate the critical angle of the material of the prism for blue colour.
- What is the measure of the angle of this prism (A)?
- Which colour should replace the blue ray, for the ray to undergo Total Internal Reflection?
Light travels a distance of ‘10x’ units in time ‘t1’ in vacuum and it travels a distance of ‘x’ units in time ‘t2’ in a denser medium. Using this information answer the question that follows :
(a) ‘Light covers a distance of ‘20x’ units in time ‘t1’ in diamond.’ State true or false.
(b) Calculate the refractive index of the medium in terms of ‘t1’ and ‘t2’.
A monochromatic ray of light is incident on an equilateral prism placed at minimum deviation position with an angle of incidence 45° as shown in the diagram.
(a) Copy the diagram and complete the path of the ray PQ.
(b) State two factors on which the angle of deviation depends.