Physics
(a) What is the angle of deviation?
(b) Copy the diagram given below and complete the path of the light ray till it emerges out of the prism. The critical angle of the glass is 42°. In your diagram, mark the angles wherever necessary.
Related Questions
(a) Define electromagnetic spectrum.
(b) Write two uses of ultraviolet rays.
(c) Calculate the speed of electromagnetic wave in a glass slab in which its frequency is 4 x 1014 Hz and wavelength is 500 nm.
(a) Write a note on total reflecting prism.
(b) State three actions that it can produce.
(c) With the help of a diagram, show one action of total reflecting prism.
If a girl puts her pencil into an empty trough and see the pencil from the position as given in the figure below:
(a) What kind of variation will be noticed in the appearance of pencil when water is poured into the trough?
(b) Mention the name of the phenomenon which accounts for the above stated observation.
(c) What is the cause of the observed phenomenon when the pencil is placed in water?
A virtual, diminished image is formed when an object is placed between the optical centre and the principal focus of a lens.
(i) Name the type of lens which forms the above image.
(ii) Draw a ray diagram to show the formation of the image with the above stated characteristics.