मराठी

According to the "New Cartesian Singh Convention" for Mirrors, What Sign Has Been Given to the Focal Length Of: A Convex Mirror? - Science

Advertisements
Advertisements

प्रश्न

According to the "New Cartesian Singh Convention" for mirrors, what sign has been given to the focal length of: 

 a convex mirror? 

उत्तर

The sign given to the focal length of a convex mirror (according to the New Cartesian Sign Convention) is positive. The is because the focus of a convex mirror is behind the mirror, on the right side.

shaalaa.com
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 4: Reflection of Light - Exercise 4 [पृष्ठ १९२]

APPEARS IN

लखमीर सिंह Physics (Science) [English] Class 10
पाठ 4 Reflection of Light
Exercise 4 | Q 1.2 | पृष्ठ १९२

व्हिडिओ ट्यूटोरियलVIEW ALL [1]

संबंधित प्रश्‍न

A spherical mirror produces an image of magnification -1.0 on a screen placed at a distance of 30 cm from the pole of the mirror.

(i) Write the type of mirror in this case.

(ii) What is the focal length of the mirror ?

(iii) What is the nature of the image formed ?

(iv) Draw the ray diagram to show the image formation in this case.


Name the mirror that can give an erect and enlarged image of an object.


An object 4 cm in height, is placed at 15 cm in front of a concave mirror of focal length 10 cm. At what distance from the mirror should a screen be placed to obtain a sharp image of the object. Calculate the height of the image.


A concave mirror produces three times magnified image on a screen. If the object is placed 20 cm in front of the mirror, how far is the screen from the object.


An object is 100 mm in front of a concave mirror which produces an upright (erect image). The radius of curvature of the mirror is ______.


The image formed by a concave mirror is of the same size as the object, if the object is placed


Draw a ray diagram to show the formation of image of an object placed on the principal axis of a convex mirror. State the position, size and nature of the image. What happens to the image as the object is moved away from the mirror?


According to cartesion sign convention, which mirror and which lens has negative focal length?


Pick out the concave and convex mirrors from the following and tabulate them.

Rear-view mirror, Dentist’s mirror, Torchlight mirror, Mirrors in shopping malls, Make-up mirror.


A 10 mm long awl pin is placed vertically in front of a concave mirror. A 5 mm long image of the awl pin is formed at 30 cm in front of the mirror. The focal length of this mirror is ______.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×