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What people are asking?

Chayanika Guin

Nov 16, 2013

what is the derivation of mirror formula of concave and convex mirror?

This answer has an image. Please click on the question to read more.

Answer (6)

Nidhi Maithani

Dec 3, 2014

What is the difference between a virtual image and a real image?

This answer has an image. Please click on the question to read more.

Answer (16)

Unmukt

Jan 19, 2014

uses of convex lens in daily life.,.

Some uses of convex lens are:

Answer (7)

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. )

This answer has an image. Please click on the question to read more.

Answer (4)

Venkatesh

Nov 21, 2013



why does the ray passing through the centre of curvature of a concave mirror retraces it's  path.

This answer has an image. Please click on the question to read more.

Answer (2)

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.

This answer has an image. Please click on the question to read more.

Answer (3)

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 ...

Answer (2)

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?

This answer has an image. Please click on the question to read more.

Answer (3)

Nameera

Feb 26, 2015

In which lens and mirror is focal lenght, object distance and image distance positive and negative?

This answer has an image. Please click on the question to read more.

Answer (3)

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�

Answer (4)

Chayanika Guin

Nov 16, 2013

what is the derivation of mirror formula of concave and convex mirror?

This answer has an image. Please click on the question to read more.

Answer (6)

Nidhi Maithani

Dec 3, 2014

What is the difference between a virtual image and a real image?

This answer has an image. Please click on the question to read more.

Answer (16)

Unmukt

Jan 19, 2014

uses of convex lens in daily life.,.

Some uses of convex lens are:

Answer (7)

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. )

This answer has an image. Please click on the question to read more.

Answer (4)

Venkatesh

Nov 21, 2013



why does the ray passing through the centre of curvature of a concave mirror retraces it's  path.

This answer has an image. Please click on the question to read more.

Answer (2)

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.

This answer has an image. Please click on the question to read more.

Answer (3)

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 ...

Answer (2)

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?

This answer has an image. Please click on the question to read more.

Answer (3)

Nameera

Feb 26, 2015

In which lens and mirror is focal lenght, object distance and image distance positive and negative?

This answer has an image. Please click on the question to read more.

Answer (3)

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�

Answer (4)

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