Advertisements
Advertisements
प्रश्न
Which type of mirror is used in the following?
Street lights
Advertisements
उत्तर
Convex mirror
APPEARS IN
संबंधित प्रश्न
An object is placed at a distance of 10 cm from a convex mirror of focal length 15 cm. Find the position and nature of the image.
A student obtains a blurred image of a distant object on a screen using a convex lens. To obtain a distinct image on the screen he should move the lens
(A) away from the screen
(B) towards the screen
(C) to a position very far away from the screen
(D) either towards or away from the screen depending upon the position of the object
Find the nature and focal length of a spherical mirror whose radius of curvature is +24 cm.
Explain with a suitable diagram, how a concave mirror converges a parallel beam of light rays. Mark clearly the pole, focus and centre of curvature of concave mirror in this diagram.
What is the nature of a mirror having a focal length of, +10 cm?
Give two uses of a convex mirror. Explain why you would choose convex mirror for these uses.
Draw a labelled ray diagram to show the formation of image in a convex-mirror when the object is at infinity. Mark clearly the pole and focus of the mirror in the diagram.
A boy is standing in front of and close to a special mirror. He finds the image of his head bigger than normal, the middle part of his body of the same size, and his legs smaller than normal. The special mirror is made up of three types of mirrors in the following order from top downwards:
(a) Convex, Plane, Concave
(b) Plane, Convex, Concave
(c) Concave, Plane, Convex
(d) Convex, Concave, Plane
The radius of curvature of a convex mirror used as a rear view mirror in a moving car is 12.0 m. A truck is coming from behind it at a distance of 3.54 m. Calculate (a)
- position and
- size of the image relative to the size of the truck.
- What will be the nature of the image?
A shop security mirror 5.0 m from certain items displayed in the shop produces on-tenth magnification.
What is the type of mirror?
Draw the given diagram in your answer book and complete it for the path of a ray of light after passing through the lens.
Draw ray diagrams to represent the nature, position and relative size of the image formed by a convex lens for the object placed:
at 2F1,
What is the effect on the size and position of the image of moving the object (i) towards the lens, and (ii) away from the lens?
A .............. mirror is obtained on silvering the outer surface of a part of a hollow glass sphere.
A convex mirror is used
A 5 cm tall object is placed perpendicular to the principle axis of a convex lens of focal length 12 cm. The distance of the object from the lens is 8 cm. Using the lens formula, find the position, size and nature of the image formed.
Identify the device used as a spherical mirror or lens in following case, when the image formed is virtual and erect in case.
Object is placed between the focus and device, image formed is enlarged and on the same side as that of the object.
The Convex mirror always forms ______ and ______ image.
A boy is standing at a distance of 3m in front of a plane mirror. The distance between the boy and his image is ______m.
What do you observe when an object is placed anywhere between P and infinity in front of a convex mirror?
