A small hole in the window of a closed room forms an inverted image of outside building on the opposite wall of the room. This happens because (a) the rays of light suffer lateral inversion on entering the hole (b) of the rectilinear propagation of light (c) the hole acts as a convex lens (d) the hole acts as a prism

A small hole in the window of a closed room forms an inverted image of outside building on the opposite wall of the room. This happens because (a) the rays of light suffer lateral inversion on entering the hole (b) of the rectilinear propagation of light (c) the hole acts as a convex lens (d) the hole acts as a prism
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When light enters a closed room through a small hole in the door, the image of an outside building appears as inverted on the opposite wall. This is because (a) The hole acts as a convex lens (b) Light takes curvature at the edges of the hole (c) Of rectilinear propagation of light (d) The hole acts as a concave lens

Description : When light enters a closed room through a small hole in the door, the image of an outside building appears as inverted on the opposite wall. This is because (a) The hole acts as a convex lens (b) ... the edges of the hole (c) Of rectilinear propagation of light (d) The hole acts as a concave lens

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Last Answer : This is the Answe:

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A source of light and a screen are placed 90 cm apart. Where should a convex lens of 20 cm focal length be placed in order to form a real image of the

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Which of the following statement describes the best about the nature of the image formed if Aditya shifts the candle towards the lens to 36 cm? (a) The nature of the image formed will be virtual, inverted and magnified. (b) The nature of the image formed will be virtual, erect and magnified. (c) The nature of the image formed will be virtual, erect and diminished. (d) The nature of the image formed will be real, inverted and diminished.

Description : Which of the following statement describes the best about the nature of the image formed if Aditya shifts the candle towards the lens to 36 cm? (a) The nature of the image formed will be virtual, ... , erect and diminished. (d) The nature of the image formed will be real, inverted and diminished.

Last Answer : (b) The nature of the image formed will be virtual, erect and magnified.

A concave lens can form a real and inverted image, when : (a) Object is placed at 2f (b) Object is placed beyond 2f (c) Object is placed between f and 2f (d) It can never form a real and

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An object nearer to a converging lens than its focal point always has a/an ______ image. a. Inverted b. The same in size c. Virtual d. Smaller size

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Last Answer : c. Virtual

An object farther from a converging lens than its focal point always has a/an _____ image. a. Inverted b. The same in size c. Virtual d. Smaller size

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An object farther from a converging lens than its focal point always has an _______ image. A. virtual B. the same in size C. inverted D. smaller size

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Last Answer : C. inverted

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Description : An object nearer to a converging lens than its focal point always has a/an ______ image. ∙ a. Inverted ∙ b. The same in size ∙ c. Virtual ∙ d. Smaller size

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An object farther from a converging lens than its focal point always has a/an _____ image. ∙ a. Inverted ∙ b. The same in size ∙ c. Virtual ∙ d. Smaller size

Description : An object farther from a converging lens than its focal point always has a/an _____ image. ∙ a. Inverted ∙ b. The same in size ∙ c. Virtual ∙ d. Smaller size

Last Answer : a. Inverted

Give scientific reason of the following 1. rain water is more fertile than water from tube well 2. the man-hole covers are generally round 3. clothes of a moving dancer bulge 4. peoples are advised not to stand near a fast moving train 5. the image of a tree looks inverted on the bank of a lake

Description : Give scientific reason of the following 1. rain water is more fertile than water from tube well 2. the man-hole covers are generally round 3. clothes of a moving dancer bulge 4. peoples are advised not to stand near a fast moving train 5. the image of a tree looks inverted on the bank of a lake

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The distance between a convex lens and a plane mirror is 15 cm. The parallel rays incident on the convex lens, after reflection from the mirror, form

Description : The distance between a convex lens and a plane mirror is 15 cm. The parallel rays incident on the convex lens, after reflection from the mirror, form

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The radii of curvatureof double convex lens of glass `(mu = 1.5)` are in the ratio of `1 : 2`. This lens renders the rays parallel coming from an illu

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Last Answer : The radii of curvatureof double convex lens of glass `(mu = 1.5)` are in the ratio of `1 ... 6 cm`. Calculate the radii of curvature of its surfaces.

Pick up the correct specification of Ramsden eyepiece from the following: (A) It consists of two equal piano convex lenses (B) The curved surfaces of Plano-convex lenses face each other (C) The distance between the diaphragm and the front lens of the eyepiece is kept equal to 1/4 th of the focal length of a lens so that rays from a point on the diaphragm enter the eye as a parallel beam (D) All the above

Description : Pick up the correct specification of Ramsden eyepiece from the following:  (A) It consists of two equal piano convex lenses  (B) The curved surfaces of Plano-convex lenses face each other  (C) ... from a point on the diaphragm enter the eye as a  parallel beam  (D) All the above 

Last Answer : (D) All the above 

Eclipses occur due to which optical phenomena? (1) Reflection (2) Refraction (3) Rectilinear propagation (4) Diffraction

Description : Eclipses occur due to which optical phenomena? (1) Reflection (2) Refraction (3) Rectilinear propagation (4) Diffraction

Last Answer : (3) Rectilinear propagation Explanation: An eclipse is an astronomical event that occurs when an astronomical object is temporarily obscured, either by passing into the shadow of another body or by having ... a wave property which states that waves propagate (move or spread out) in straight lines.

Eclipses occur due to which optical phenomena? (1) Reflection (2) Refraction (3) Rectilinear propagation (4) Diffraction

Description : Eclipses occur due to which optical phenomena? (1) Reflection (2) Refraction (3) Rectilinear propagation (4) Diffraction

Last Answer : Rectilinear propagation

The defect of a lens whereby rays of white light proceeding from a point get dispersed into their components and conveyed to various foci, forming a blurred and coloured image is known as (A) Chromatic aberration (B) Spherical aberration (C) Astigmatism (D) Coma

Description : The defect of a lens whereby rays of white light proceeding from a point get dispersed into their components and conveyed to various foci, forming a blurred and coloured image is known as (A) Chromatic aberration (B) Spherical aberration (C) Astigmatism (D) Coma

Last Answer : (A) Chromatic aberration

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Description : Convex mirrors are used as a rear view mirror in motor cycles because (1) it forms real image (2) it forms erect (upright) image (3) it forms smaller image as compared with object (4) All of the above

Last Answer : (3) it forms smaller image as compared with object Explanation: It is because image formed by an convex mirror is always virtual, erect and smaller than the object.

Convex mirrors are used as a rear view mirror in motor cycles because (1) it forms real image (2) it forms erect (upright) image (3) it forms smaller image as compared with object (4) All of the above

Description : Convex mirrors are used as a rear view mirror in motor cycles because (1) it forms real image (2) it forms erect (upright) image (3) it forms smaller image as compared with object (4) All of the above

Last Answer : it forms smaller image as compared with object

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Description : A camera uses a ----- to form an image. A. convex lens (Answer) B. concave lens C. condenser lens D. none of these

Last Answer : A. convex lens (Answer)

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15. An object 2 cm high is placed at a distance of 64 cm from a white screen. On placing a convex lens at a distance of 32 cm from the object it is found that a distinct image of the object is formed on the screen. What is the focal length of the conve -Chemistry-10

Description : 15. An object 2 cm high is placed at a distance of 64 cm from a white screen. On placing a convex lens at a distance of 32 cm from the object it is found that a distinct image of the object is formed on the screen. What is the focal length of the conve -Chemistry-10

Last Answer : Since, object-screen distance is double of object-lens separation, the object is at a distance of 2f from the lens and the image should be of the same size of the object.

12. Draw ray diagrams to represent the nature, position and relative size of the image formed by a convex lens for the object placed: -Chemistry-10

Description : 12. Draw ray diagrams to represent the nature, position and relative size of the image formed by a convex lens for the object placed: -Chemistry-10

Last Answer : Answer. hope this helps you

2. An object 50 cm tall is placed on the principal axis of a convex lens. Its 20 cm tall image is formed on the screen placed at a distance of 10 cm from the lens. Calculate the focal length of the lens. [All India] -Chemistry-10

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Last Answer : this is the answer for the respected question