Description : Draw the ray diagram in each case to show the position and nature of the image formed when the object is placed: (i) at the centre of curvature of a concave mirror (ii) between the pole P and focus F of ... front of a convex mirror (iv) at 2F of a convex lens (v) in front of a concave lens -Physics
Last Answer : Answer. Nature of image: Real, inverted and same size image is formed at the centre of curvature. Nature of image: Virtual, enlarged and erect image is formed behind the mirror. Nature of image: Virtual ... : Virtual, erect and diminished image is formed between O and F on the same side of object.
Description : Ramsden eye-piece consists of (A) Two convex lenses short distance apart (B) Two concave lenses short distance apart (C) One convex lens and one concave lens short distance apart (D) Two Plano-convex lenses short distance apart, with the convex surfaces facing each other
Last Answer : (D) Two Plano-convex lenses short distance apart, with the convex surfaces facing each other
Description : A spherical convex surface separates object and image space of refractive index `1.0 and 4/3.` If radius of curvature of the surface is `10cm,` find i
Last Answer : A spherical convex surface separates object and image space of refractive index `1.0 and 4/3.` If ... of the surface is `10cm,` find its power.
Description : An object is placed at a distance of 12 cm in front of a concave mirror of radius of curvature 30 cm. List four characteristics of the image formed by the mirror. -Science
Last Answer : Here, radius of curvature of concave mirror, R = 30 cm. Therefore, focal length of the mirror, f = R/2 = 30/2 = 15 cm Also, object distance, u = 12 cm Hence, knowing the focal length of mirror and ... (i) Erect (ii) Larger in size than that of the object (iii) Virtual and (iv) Behind the mirror.
Description : A concave lens focal length 10 cm is placed on the axis of concave mirror of 10 cm radius at a distance of 5 cm from the mirror. An object is placed s
Last Answer : A concave lens focal length 10 cm is placed on the axis of concave mirror of 10 cm radius ... the object itself. Determine the position of the object.
Description : A concave mirror forms a real image four times as tall as the object placed 10 cm infront of mirror. Find the position of the image and the radius of
Last Answer : A concave mirror forms a real image four times as tall as the object placed 10 cm infront of ... image and the radius of curvature of the mirror.
Description : An object is placed in front of a concave mirror of radius of curvature `40 cm` at a distance of `10 cm`. Find the position, nature and magnification
Last Answer : An object is placed in front of a concave mirror of radius of curvature `40 cm` at a ... Find the position, nature and magnification of the image.
Description : An object 0.04 m high is placed at a distance of 0.8 m from a concave mirror of radius of curvature 0.4 m. find the position, nature and the size of t
Last Answer : An object 0.04 m high is placed at a distance of 0.8 m from a concave mirror of radius of ... the position, nature and the size of the image formed.
Description : 14. An object 5 cm is placed at a distance of 20 cm in front of a convex mirror of radius of curvature 30 cm. Find the position, nature and size of the image. -Physics-10
Last Answer : Object distance (u) = - 20 cm Object height (h) = 5 cm Radius of curvature (R) = 30 cm Radius of curvature = 2 Focal length R = 2f f = 15 cm According to the mirror formula, ... image height indicates that the image formed is erect. Hence, the image formed is erect, virtual, and smaller in size.
Description : An object is placed at a distance of 15 cm from a convex mirror and images is formed at a distance of 5 cm from the mirror. Calculate the radius of cu
Last Answer : An object is placed at a distance of 15 cm from a convex mirror and images is formed at a ... mirror. Calculate the radius of curvature of the mirror.
Description : A light ray is incident on a plane mirror placed in a horizontal plane, making an angle of `30^(@)` with the vertical, then the angle between the refl
Last Answer : A light ray is incident on a plane mirror placed in a horizontal plane, making an angle of `30^(@)` with the vertical, ... @)` C. `90^(@)` D. `30^(@)`
Description : rays of light strike a horizontal plane mirror at an angle of `45^(@)`. At what angle should be a second plane mirror be placed in order that the refl
Last Answer : rays of light strike a horizontal plane mirror at an angle of `45^(@)`. At what ... ray finally be reflected horizontally from the second mirror.
Description : What type of mirror can be used to obtain the real image of an object? (a) Plane mirror (b) Concave mirror (c) Convex mirror (d) No mirror can produce a real image
Last Answer : Ans:(b)
Description : A real image of an object is to be obtained. The mirror required for this purpose is : (a) convex mirror (b) concave mirror (c) plane mirror (d) either convex or concave mirror
Last Answer : (c) plane mirror
Description : Generally weeds seeds are abundant at a depth of a). 1.0-1.5cm b). 5 cm c).10cm d).15cm
Last Answer : a). 1.0-1.5cm
Description : A dentist concave mirror has a radius of curvature of `30 cm`. How far must it be placed from a small cavity in order to get a virtual image magnified
Last Answer : A dentist concave mirror has a radius of curvature of `30 cm`. How far must it be placed from a ... order to get a virtual image magnified `5` times ?
Description : 14. An object 2 cm in size is placed 30 cm in front of a concave mirror of focal length 15 cm. At what distance from the mirror should a screen be placed in order to obtain a sharp image? What will be the nature and the size of the -Chemistry-10
Last Answer : Answer. hope this helps you
Description : 15. An object of size 7.0 cm is placed at 27 cm in front of a concave mirror of focal length 18 cm. At what distance from the mirror should a screen be placed so that a sharply focused image can be obtained? Find the size and nature of the image. -Physics-10
Last Answer : Object distance (u) = – 27 cm Object height (h) = 7 cm Focal length (f) = – 18 cm According to the mirror formula, The negative value of image height indicates that the image formed is inverted.
Description : 2. A concave mirror produces three times magnified (enlarged) real image of an object placed at 10 cm in front of it. Where is the image located? -Physics-10
Last Answer : Magnification produced by a spherical mirror: Object distance (u) = – 10 cm v = 3 × (- 10) = – 30 cm Therefore, the negative sign indicates that an inverted image is formed in front of the given concave mirror at a distance of 30 cm.
Description : A concave mirror of focal length 15 cm can form a magnified, erect as well as inverted image of an object placed in front of it." Justify this statement stating the position of the object with respect to the pole of the mirror in both the cases for obtaining the images. -Science
Last Answer : For magnified and erect image the object is placed between pole P and focus F. For magnified and inverted image the object is placed either at focus or anywhere between F and C.
Description : An object of `1cm^(2)` face area is placed at a distance of 1.5m from a screen. How far from the object should a concave mirror be placed so that it f
Last Answer : An object of `1cm^(2)` face area is placed at a distance of 1.5m from a screen. How ... the screen? Also, calculate the focal length of the mirror.
Description : Find the position of an object which when placed in front of a concave mirror of focal length 20 cm, produces a virtual image which is twice the size
Last Answer : Find the position of an object which when placed in front of a concave mirror of focal length 20 cm ... image which is twice the size of the object.
Description : Find the size, nature and position of image formed by a concave mirror, when an object of size 1 cm is placed at a distance of 15 cm. Given focal leng
Last Answer : Find the size, nature and position of image formed by a concave mirror, when an object of size 1 cm ... 15 cm. Given focal length of mirror is 10 cm.
Description : An object is placed at focus of a concave mirror, image will be formed at : (a) focus (b) between F and C (c) beyond C (d) at infinity
Last Answer : (d) at infinity
Description : To create an enlarged real image using a concave mirror, the object must be placed: w) beyond the center of curvature. x) between the center and the focus. y) at the focus. z) closer than the focus.
Last Answer : ANSWER: X -- BETWEEN THE CENTER AND THE FOCUS.
Description : 12. 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. -Physics-10
Last Answer : Focal length of convex mirror (f) = +15 cm Object distance (u) = - 10 cm According to the mirror formula, The image is located at a distance of 6 cm from the mirror on the other ... and a value of less than 1 of magnification indicates that the image formed is virtual and erect and diminished.
Description : A convex mirror produces a magnification of `1//2` when the object is placed at a position A and a magnification of `1//3` when the object is at a pos
Last Answer : A convex mirror produces a magnification of `1//2` when the object is placed at a position A and a ... cm, what is the focal length of the mirror ?
Description : When an object is placed at a distance of `60 cm` from a convex spherical mirror, the magnification produced is `1//2`. Where should the object be pla
Last Answer : When an object is placed at a distance of `60 cm` from a convex spherical mirror, the magnification ... placed to get a magnification of `1//3` ?
Description : An object is placed at a distance equal to the focal length of convex mirror. If the focal length of the mirror be f, then the distance of the image from the pole of the mirror is (a) Less than f (b) Equal of f (c) More than f (d) Infinity
Last Answer : Ans:(a)
Description : What type of mirror is used by motorists to see the road behind them? (a) Convex (b) Concave (c) Plane (d) Concave-convex
Description : A virtual image can be formed by one or more of the following single mirrors? Identify them. w) plane mirror x) concave spherical mirror y) convex spherical mirror z) all of the above
Last Answer : ANSWER: Z -- ALL OF THE ABOVE (accept: A, B and C)
Description : A circular coil of `20turns` and radius `10cm` carries a current of `5A`. It is placed in a uniform magnetic field of `0*10T`. Find the torque acting
Last Answer : A circular coil of `20turns` and radius `10cm` carries a current of `5A`. It is placed in a uniform magnetic ... Nm B. 3.14 Nm C. 0.314 Nm D. zero
Description : Which one of the following can be used to focus sunlight? A. Plane mirror B. Concave lens C. Concave mirror D. Convex mirror
Last Answer : ANSWER: C
Description : The rear view mirror of a motor vehicle is _____ A. Concave B. Plane C. Convex D. Biconcave
Description : The type of mirror used in the headlamps of cars is the (a) plane mirror (b) spherical convex mirror (c) spherical concave mirror (d) parabolic concave mirror
Last Answer : Ans:(d)
Description : For the rear view, motorists use (a) plane mirror (b) concave mirror (c) convex mirror (d) cylindrical mirror
Last Answer : Ans:(c)
Description : Which of the following can be used as a burning glass? (a) Plane mirror (b) Convex mirror (c) Concave lens (d) Concave mirror
Description : If you look into a mirror and find that the image (your reflexion) is smaller than you, then the type of the mirror is - (1) plano-concave mirror (2) concave mirror (3) plane mirror (4) convex mirror
Last Answer : (4) convex mirror Explanation: A convex mirror, diverging mirror, or fish eye mirror is a curved mirror in which the reflective surface bulges toward the light source. Such mirrors always form a virtual image and the image is smaller than the object.
Description : The mirror used by ENT specialist is: (1) Plane mirror (2) Concave mirror (3) Convex mirror (4) None of these
Last Answer : (2) Concave mirror Explanation: To see the inner part of ear and other parts, E.N.T doctors use a concave mirror. When the rays of light falls on reflecting surface of concave mirror, that time Concave mirror concentrate those all the rays at its focus.
Description : Vehicles use ______ to see the objects coming from behind. (1) Concave lens (2) Convex lens (3) Convex mirror (4) Concave mirror
Last Answer : (2) Convex lens Explanation: Convex mirror is used in rear view mirror of vehicles; so that the driver can see the traffic coming from behind. The field of view is widest in case of a convex mirror, which enables it to show a wider area from behind.
Description : Shaving mirror is – (1) Convex (2) Concave (3) Plane (4) Parabolic
Last Answer : (2) Concave Explanation: Concave mirrors are used in makeup or shaving mirrors. When shaving or applying makeup, a person holds the mirror close to her face. This allows him to see an enlarged image of him face, which is helpful for applying makeup or shaving correctly.
Description : Which type of mirror is used in the head lights of vehicles? (1) Plane mirror (2) Concave mirror (3) Convex mirror (4) Parabolic mirror
Last Answer : (2) Concave mirror Explanation: Car head lights have concave mirrors because it collects and focuses as much as possible of the light from the bulb and send it out as a fairly tight beam in one ... at the focal point. The reflected light is parallel and gives more visibility to the driver at night.
Description : A rear-view mirror for driving is – (1) plain (2) concave (3) convex (4) inverted
Last Answer : (3) convex Explanation: The kind of mirror used in the rear-view mirror must be convex mirrors, because it creates smaller, yet still upright images. Concave mirrors would create an inverted image and ... make everything smaller so this allows the driver to see a greater range of things behind him.
Description : The Mirror used in the Automobiles are------? A. Concave B. Convex (Answer) C. Plains D. Reflective
Last Answer : B. Convex (Answer)
Description : The rear view mirror of a motor vehicle is ----? A. Concave B. Plane C. Convex (Answer) D. Biconcave
Last Answer : C. Convex (Answer)
Description : Why is concave mirror used and not convex mirror? (a) because concave mirror can give real image. (b) because convex mirror can give real image. (c) because concave mirror cannot give real image. (d) because convex mirror cannot give virtual image.
Last Answer : (a) because concave mirror can give real image.
Description : 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 ... , Plane, Concave (b) Plane, Convex, Concave (c) Concave, Plane, Convex (d) Convex, Concave, Plan
Last Answer : (c) Concave, Plane, Convex
Description : When beam of parallel rays of light falls on _______ then all the rays of light converge . a) convex lens b)concave lens c)plain mirror d)plano concave lens
Last Answer : a) convex lens
Description : A real image can be formed by which of the following single mirrors? w) a plane mirror x) a concave spherical mirror y) a convex spherical mirror
Last Answer : ANSWER: X -- A CONCAVE SPHERICAL MIRROR
Description : You want to put up a mirror at a blind corner in a building. Which of the following will give you the largest field of view? Is it a: w) convex mirror x) concave mirror y) cylindrical mirror z) plane mirror
Last Answer : ANSWER: W -- CONVEX MIRROR