This page requires a JavaScript-enabled browser
Instructions on how to enable your browser are contained in the help file.
Physics 10 Chapter 3 - Geometrical Optics - 20
1.
What is the nature of image produced in photograph enlarger?
a) Inverted image
b) Real image
c) Enlarged image
d) All of these
2.
In which of the following, right-angled prisms are used?
a) All of these
b) Periscope
c) Binoculars
d) Cameras
3.
One of the angles of right-angled prism is...........?
a) 90˚
b) 270˚
c) 180˚
d) 45˚
4.
When a ray of light strikes a face of prism perpendicularly, it enters the prism..............?
a) At an angle of 90˚
b) Without deviation
c) At an angle of 180˚
d) At an angle of 45˚
5.
When a ray of light strikes a face of prism perpendicularly, it strikes the hypotenuse of the prism..............?
a) At an angle of 45˚
b) At an angle of 55˚
c) At an angle of 90˚
d) At an angle of 180˚
6.
How many right-angled prism(s) are used in periscope?
a) Four
b) One
c) Two
d) Three
7.
How many 180˚-angled prism(s) are used in periscope?
a) Four
b) Two
c) Three
d) One
8.
What is travelled through hair-size threads of fibre optics?
a) Light
b) Sound
c) Temperature
d) Heat
9.
What is the inner part of fibre optics called?
a) Core
b) Endoscope
c) Light pipe
d) Cladding
10.
Through which of the following part of fibre optics, light travels?
a) Core
b) Endoscope
c) Cladding
d) Light pipe
11.
What is the outer concentric shell of fibre optics called?
a) Light pipe
b) Endoscope
c) Core
d) Cladding
12.
Which of the following statement is correct about fibre optics?
a) Cladding is made of plastic of high refractive index
b) Cladding is made of glass of high refractive index
c) Core is made of plastic of high refractive index
d) Core is made of glass of low refractive index
13.
Which of the following statement is correct about fibre optics?
a) Core is made of glass of low refractive index
b) Core is made of plastic of low refractive index
c) Cladding is made of plastic of high refractive index
d) Cladding is made of plastic of low refractive index
14.
Which of the following statement is correct about fibre optics?
a) Core is made of glass of high refractive index
b) Cladding is made of glass of high refractive index
c) Cladding is made of plastic of high refractive index
d) Core is made of glass of low refractive index
15.
What is the critical angle of glass?
a) 42˚
b) 54˚
c) 45˚
d) 24˚
This is more feedback!
This is the feedback!
