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प्रश्न
Name the two types of spherical mirrors. What type of mirror is represented by the:
front side of a shining steel spoon?
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उत्तर
The types of spherical mirrors represented by the
front side of a shining steel spoon is concave mirror
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संबंधित प्रश्न
A student used a device (X) to obtain/focus the image of a well illuminated distant building on a screen (S) as shown below in the diagram. Select the correct statement about the device (X).
An image that cannot be obtained on a screen is called ______.
Which type of mirror can form a real image?
A 50 cm tall object is at a very large distance from a diverging lens. A virtual, erect and diminished image of the object is formed at a distance of 20 cm in front of the lens. How much is the focal length of the lens?
Which are the two convenient rays that are chosen to construct the image by a spherical mirror for a given object? Explain with the help of suitable ray diagrams.
An optical device has been given to a student and he determines its focal length by focusing the image of the sun on a screen placed 24 cm from the device on the same side as the sun. Select the correct statement about the device.
(A) Convex mirror of focal length 12 cm
(B) Convex lens of focal length 24 cm
(C) Concave mirror of focal length 24 cm
(D) Convex lens of focal length 12 cm
Name the kind of mirror used to obtain:
A virtual and diminished image
Upto what maximum distance from the pole the image in a convex mirror can be obtained? what will be the location of object then ?
The sun is seen before the sunrise and after the sunset.
Draw a ray diagram to show the formation of the image, when the object is placed between optical centre and principal focus of a convex lens.
State the signs and values of magnifications in the above mentioned case.
An object 5 cm high forms a virtual image of 1.25 cm high, when placed in front of a convex mirror at a distance of 24 cm. Calculate:
- the position of the image
- the focal length of the convex mirror.
The following figure shows a concave mirror with its pole (P), focus (F), and center of curvature (C). Draw a ray diagram to show the formation of the image of an object AB by the concave mirror.
Complete the following diagrams shown in the following figures by drawing the reflected rays.
Name the type of mirror used in the following situation:
Solar furnace
Support your answer with reason.
The radius of curvature of a spherical mirror is 18 cm. What is the focal length of this mirror?
Explain why a ray of light passing through the center of curvature of a concave mirror, gets reflected along with the same pattern.
In normal adjustment, for a refracting telescope, the distance between objective and eye piece is 30 cm. The focal length of the objective, when the angular magnification of the telescope is 2, will be ______.
Define the following terms in the context of a diverging mirror:
- Principal focus
- Focal length
Draw a labelled ray diagram to illustrate your answer.
