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Chayanika Guin

Nov 16, 2013



Nidhi Maithani

Dec 3, 2014



Unmukt

Jan 19, 2014

#### uses of convex lens in daily life.,.



Some uses of convex lens are:

Piyush chavan

Mar 3, 2015



Venkatesh

Nov 21, 2013



V.m.hameed

Jan 28, 2015



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-size, h = + 5.0 cm;
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



Nameera

Feb 26, 2015



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



there could be two position of object�

Chayanika Guin

Nov 16, 2013



Nidhi Maithani

Dec 3, 2014



Unmukt

Jan 19, 2014

#### uses of convex lens in daily life.,.



Some uses of convex lens are:

Piyush chavan

Mar 3, 2015



Venkatesh

Nov 21, 2013



V.m.hameed

Jan 28, 2015



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-size, h = + 5.0 cm;
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



Nameera

Feb 26, 2015