Medium
Name the type of mirror used in the following:
$(a)$ Solar furnace.
$(b)$ Side/rear-view mirror of a vehicle.
Draw a labelled ray diagram to show the formation of image in each of the above two cases.
Which of these mirrors could also form a magnified and virtual image of an object? Illustrate with the help of a ray diagram.
$(a)$ Solar furnace.
$(b)$ Side/rear-view mirror of a vehicle.
Draw a labelled ray diagram to show the formation of image in each of the above two cases.
Which of these mirrors could also form a magnified and virtual image of an object? Illustrate with the help of a ray diagram.
(A-D) Concave mirror is used in a solar furnace because it converges parallel rays of sunlight to a single point (focus),producing high heat.
$(b)$ Convex mirror is used as a side/rear-view mirror in vehicles because it provides a wider field of view and always forms a virtual,erect,and diminished image.
Concave mirror can form a magnified and virtual image when the object is placed between the pole $(P)$ and the focus $(F)$ of the mirror.
The ray diagram for the magnified and virtual image is as follows: When an object is placed between $P$ and $F$,the reflected rays appear to diverge from a point behind the mirror,forming a virtual,erect,and magnified image.
$(b)$ Convex mirror is used as a side/rear-view mirror in vehicles because it provides a wider field of view and always forms a virtual,erect,and diminished image.
Concave mirror can form a magnified and virtual image when the object is placed between the pole $(P)$ and the focus $(F)$ of the mirror.
The ray diagram for the magnified and virtual image is as follows: When an object is placed between $P$ and $F$,the reflected rays appear to diverge from a point behind the mirror,forming a virtual,erect,and magnified image.
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Similar Questions
$(a)$ Define absolute refractive index.
$(b)$ The path of a light ray from three different media $A, B$ and $C$ for a given angle of incidence is shown below. Study the diagrams and answer the following questions.
$(i)$ Which of the three media $A, B$ or $C$ has maximum optical density?
$(ii)$ Through which of the three media,will the speed of light be maximum?
$(iii)$ Will the light travelling from $A$ to $B$ bend towards or away from the normal?
$(iv)$ Will the refractive index of $B$ relative to $C$ be more than unity or less than unity?
$(b)$ The path of a light ray from three different media $A, B$ and $C$ for a given angle of incidence is shown below. Study the diagrams and answer the following questions.
$(i)$ Which of the three media $A, B$ or $C$ has maximum optical density?
$(ii)$ Through which of the three media,will the speed of light be maximum?
$(iii)$ Will the light travelling from $A$ to $B$ bend towards or away from the normal?
$(iv)$ Will the refractive index of $B$ relative to $C$ be more than unity or less than unity?
Medium
View Solution$(i)$ Define the principal focus of a concave mirror.
$(ii)$ Why do we prefer a convex mirror as a rear-view mirror in vehicles?
$(iii)$ We wish to obtain an erect image of an object using a convex lens. Draw a ray diagram to show the image formation in this case.
$(ii)$ Why do we prefer a convex mirror as a rear-view mirror in vehicles?
$(iii)$ We wish to obtain an erect image of an object using a convex lens. Draw a ray diagram to show the image formation in this case.
Medium
View SolutionOne half of a convex lens of focal length $10\, cm$ is covered with a black paper. Can such a lens produce an image of a complete object placed at a distance of $30\, cm$ from the lens? Draw a ray diagram to justify your answer.
$A$ $4\, cm$ tall object is placed perpendicular to the principal axis of a convex lens of focal length $20\, cm$. The distance of the object from the lens is $15\, cm$. Find the nature,position and size of the image.
$A$ $4\, cm$ tall object is placed perpendicular to the principal axis of a convex lens of focal length $20\, cm$. The distance of the object from the lens is $15\, cm$. Find the nature,position and size of the image.
Difficult
View SolutionDraw the ray diagram in each case to show the position,nature,and size of the image formed when the object is placed:
$(i)$ At the centre of curvature of a concave mirror.
$(ii)$ Within the focal length of a convex lens.
$(iii)$ Between the pole and focus of a concave mirror.
$(iv)$ In front of a convex mirror.
$(v)$ In front of a concave lens.
$(i)$ At the centre of curvature of a concave mirror.
$(ii)$ Within the focal length of a convex lens.
$(iii)$ Between the pole and focus of a concave mirror.
$(iv)$ In front of a convex mirror.
$(v)$ In front of a concave lens.
Medium
View SolutionWhich of the following always form a virtual image?
Easy
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