Advertisements
Advertisements
प्रश्न
What is the nature of the mirror having a focal length of -20 cm?
एक पंक्ति में उत्तर
उत्तर
The mirror having -20 cm as its focal length is a concave mirror because the focal length is taken negatively only in case of a concave mirror.
shaalaa.com
क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
APPEARS IN
संबंधित प्रश्न
An image which can be obtained on a screen is called a ______ image.
Which type of mirror can form a real image?
A 2.0 cm tall object is placed 40 cm from a diverging lens of focal length 15 cm. Find the position and size of the image.
Mention the types of mirrors used as (i) rear view mirrors, (ii) shaving mirrors. List two reasons to justify your answers in each case.
State the types of mirrors used for (i) headlights and (ii) rear view mirror, in cars and motorcycles. Give to justify your answer in each case.
Define the term Principal axis.
Name the type of mirror having a focal length of +20 cm.
Define pole of a mirror.
You can see the reflection of your clearly on a polished table-top is not polished. Explain.
In the following figure shows a concave mirror with its pole (P), focus (F) and centre of curvature (C). Draw a ray diagram to show the formation of the image of an object AB by the concave mirror.
