Physics
Complete the path of the ray AB through the glass prism in PQR till it emerges out of the prism. Given the critical angle of the glass as 42°.
Related Questions
A diver in water looks obliquely at an object AB in air.
(i) Does the object appear taller, shorter or of the same size to the diver?
(ii) Show the path of two rays AC & AD starting from the tip of the object as it travels towards the diver in water and hence obtain the image of the object.
A block and tackle system of pulleys has velocity ratio 4.
(i) Draw a neat, labelled diagram of the system indicating clearly the points of application and direction of load and effort.
(ii) What will be it's V.R. if the weight of the movable block is doubled?
A lens of focal length 20 cm forms an inverted image at a distance 60 cm from the lens.
(i) Identify the lens.
(ii) How far is the lens present in front of the object?
(iii) Calculate the magnification of the image.
Give reasons for the following:
During the day:
(i) Clouds appear white.
(ii) Sky appears blue.