Advertisements
Advertisements
प्रश्न
No matter how far you stand from a mirror, your image appears erect. The mirror is likely to be ______.
पर्याय
Plane
Concave
Convex
Either plane or convex
उत्तर
No matter how far you stand from a mirror, your image appears erect. The mirror is likely to be either plane or convex.
Explanation:
A convex mirror always gives a virtual and erect image of a smaller size of the object placed in front of it. Similarly, a plane mirror will always give a virtual and erect image of the same size as that of the object placed in front of it. Therefore, the given mirror could be either plane or convex.
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.
An object is placed at a distance of 30 cm in front of a convex mirror of focal length 15 cm. Write four characteristics of the image formed by the mirror.
If the image formed by a mirror for all positions of the object placed in front of it is always diminished, erect and virtual, state the type of the mirror and also draw a ray diagram to justify your answer. Write one use such mirrors are put to and why.
An object is placed at a long distance in front of a convex mirror of radius of curvature 30 cm. State the position of its image.
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 of an object by a convex mirror. Mark clearly the pole, focus and centre of curvature on the diagram.
Whatever be the position of the object, the image formed by a mirror is virtual, erect and smaller than the object. The mirror then must be:
(a) plane
(b) concave
(c) convex
(d) either concave or convex
The diagrams show the appearance of a fork when placed in front of and close to two mirrors A and B, turn by turn.
Figure
(a) Which mirror is convex
(b) Which mirror is concave
Give reasons for your choice.
Two big mirrors A and B are fitted side by side on a wall. A man is standing at such a distance from the wall that he can see the erect image of his face in both the mirrors. When the man starts walking towards the mirrors, he find that the size of his face in mirror A goes on increasing but that in mirror B remains the same.
(a) mirror A is concave and mirror B is convex
(b) mirror A is plane and mirror B is concave
(c) mirror A is concave and mirror B is plane
(d) mirror A is convex and mirror B is concave
A shop security mirror 5.0 m from certain items displayed in the shop produces on-tenth magnification.
What is the type of mirror?
An object is placed at the following distance from a convex lens of focal length 15 cm:
(a) 35 cm
(b) 30 cm
(c) 20 cm
(d) 10 cm
Which position of the object will produce:
(i) a magnified real image?
(ii) a magnified virtual image?
(iii) a diminished real image?
(iv) an image of same size as the object?
The image formed by a convex mirror is
A convex mirror is used
A driver uses a convex mirror as a rearview mirror. Explain the reason with the help of a ray diagram.
A full length image of a distant tall building can definitely be seen by using ______.
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 image formed by these mirrors is ______ than the object.
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.
Higher-Order Thinking Skills:
A convex mirror is in water. What should be the change in its focal length?
Which type of mirror is used in the following?
Street lights
