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Chayanika Guin
Nov 16, 2013
what is the derivation of mirror formula of concave and convex mirror?
Nidhi Maithani
Dec 3, 2014
What is the difference between a virtual image and a real image?
Unmukt
Jan 19, 2014
uses of convex lens in daily life.,.
Some uses of convex lens are:
Piyush chavan
Mar 3, 2015
The absolute refractive indices of glass and water are 4/3 & 3/2, respectively. If speed of light in glass is 2x108 m/s , calculate the speed of light in vacum and water.( 2015 Boards Que. )
Venkatesh
Nov 21, 2013
why does the ray passing through the centre of curvature of a concave mirror retraces it's path.
why does the ray passing through the centre of curvature of a concave mirror retraces it's path.
V.m.hameed
Jan 28, 2015
If the speed of light in vacuum is 3x10⁸ m/s, find the speed of light in a medium of absolute refractive index 1.5.
Nameera
Feb 26, 2015
In which lens and mirror is focal lenght, object distance and image distance positive and negative?
David
Dec 5, 2014
An object 5 cm in size is placed at a distance of 20 cm from the concave mirror of focal length 15 cm. At what distance from the mirror should a screen be placed to get a sharp image? Also find the height of the image.
Object-distance, u = – 20.0 cm;
Focal length, f = –15.0 cm;
Image-distance, v = ?
Image-size, h′ = ?
Mirror formula is ...
Neeraja Babu Babu
Mar 3, 2015
If the image formed by a mirror for all positions of the object placed in front of it is always erect and diminished, what type of mirror is it ? Draw a ray diagram to justify your answer. Where and why do we generally use this type of mirror?
Lavanya N
Feb 7, 2014
A convex lens of focal length 20 cm produces 3 times magnified real image of an object. Find the position of the object
A convex lens of focal length 20 cm produces 3 times magnified real image of an object. Find the position of the object
there could be two position of object�
Chayanika Guin
Nov 16, 2013
what is the derivation of mirror formula of concave and convex mirror?
Nidhi Maithani
Dec 3, 2014
What is the difference between a virtual image and a real image?
Unmukt
Jan 19, 2014
uses of convex lens in daily life.,.
Some uses of convex lens are:
Piyush chavan
Mar 3, 2015
The absolute refractive indices of glass and water are 4/3 & 3/2, respectively. If speed of light in glass is 2x108 m/s , calculate the speed of light in vacum and water.( 2015 Boards Que. )
Venkatesh
Nov 21, 2013
why does the ray passing through the centre of curvature of a concave mirror retraces it's path.
why does the ray passing through the centre of curvature of a concave mirror retraces it's path.
V.m.hameed
Jan 28, 2015
If the speed of light in vacuum is 3x10⁸ m/s, find the speed of light in a medium of absolute refractive index 1.5.
Nameera
Feb 26, 2015
In which lens and mirror is focal lenght, object distance and image distance positive and negative?
David
Dec 5, 2014
An object 5 cm in size is placed at a distance of 20 cm from the concave mirror of focal length 15 cm. At what distance from the mirror should a screen be placed to get a sharp image? Also find the height of the image.
Object-distance, u = – 20.0 cm;
Focal length, f = –15.0 cm;
Image-distance, v = ?
Image-size, h′ = ?
Mirror formula is ...
Neeraja Babu Babu
Mar 3, 2015
If the image formed by a mirror for all positions of the object placed in front of it is always erect and diminished, what type of mirror is it ? Draw a ray diagram to justify your answer. Where and why do we generally use this type of mirror?
Lavanya N
Feb 7, 2014
A convex lens of focal length 20 cm produces 3 times magnified real image of an object. Find the position of the object
A convex lens of focal length 20 cm produces 3 times magnified real image of an object. Find the position of the object
there could be two position of object�