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An object is kept in front of a concave ...

An object is kept in front of a concave lens.What is the nature of the image formed?

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To determine the nature of the image formed by a concave lens when an object is placed in front of it, we can follow these steps: ### Step-by-Step Solution: 1. **Understanding the Lens Type**: - A concave lens is a diverging lens, which means it causes parallel rays of light to diverge after passing through it. 2. **Positioning the Object**: ...
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An object is placed in front of a concave lens. A virtual image of the object is formed on the same side of the lens as the object but is closer to the lens. Will rays form this image refract once again at the lens to form a second image?

An object is kept in front of a concave mirror of focal length 15 cm. The image formed is three times the size of the object. Calculate the two possible distances of the object from the mirror.

An object is kept in front of a concave mirror of focal length 15 cm. The image formed is three times the size of the object. Calculate the two possible distances of the object from the mirror.

An object in placed 30cm in front of a concave lens that is made of a glass of refractive index 1.5 and has equal radii of curvature of its two surfaces, each 30 cm. The surface of the lens farther away from the object is silvered. Find the nature and position of the final image.

A convex lens of focal length 20cm is placed coaxilly with a convex mirror of radius of curvature 20 cm. The two are kept 15 cm apart. A point object is placed 40 cm in front of the convex lens. Find the position of the image formed by this combination. Draw the ray diagram showing the image formation.

An object is placed at a distance 24 cm in front of a convex lens of focal length 8 cm. (i) What is the nature of the image so formed ? (ii) Calculate the distance of the image from the lens. (iii) Calculate the magnification of the image.

Prove that when an object is placed in front of a concave lens, the image formed is (i) virtual (ii) erect (iii) diminished (iv) and located between pole and focus.

Two thin lenses, both of 10 cm focal length- one convex and other concave, are placed 5 cm apart. An object is placed 20 cm in front of the convex lens. Find the nature and position of the final image.

An object is placed in front of a converging lens at a distance equal to twice the focal length f_(1) of the lens. On the other side of the lens is a concave mirror of focal length f_(2) separated from the lens is a concave mirror of focal length f_(2) separated from the lens by a distance 2(f_(1)+f_(2)) . Light from the object passes rightward through the lens, reflects from the mirror, passes leftward throught the lens, and forms a final image of the object.

Where should an object be placed in front of a convex lens to get a real to get real image of the size of the object ?

XII BOARD PREVIOUS YEAR PAPER ENGLISH-XII BOARDS-SECTION-A
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  2. State one factor which determines the intensity of light in the photon...

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  3. An iron-cored solenoid has self- inductance. 2.8 H. When the core is r...

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  4. An object is kept in front of a concave lens.What is the nature of the...

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  5. When light travels from a rarer to denser medium, it loses some speed....

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  6. A point charge +Q is placed in the vicinity of a conducting surface. D...

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  7. Define modulation index. Why is it generally kept less than one ?

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  8. The objective lenses of two telescope have the same apertures but thei...

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  9. (a) Define the term 'conductivity' of a metallic wire. Write its SI un...

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  10. Nichrome and copper wires of same length and same radius are connected...

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  11. Do electromagnetic waves carry energy and momentum?

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  12. How does the angle of minimum deviation of a glass prism vary, if the...

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  13. Name the phenomenon which shows the quantum nature of electromagnetic ...

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  14. Draw the pattern of electric lines, when a point charge - Q is kept ne...

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  15. How does the mobility of electrons in a conductor change, if the poten...

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  16. Define the term "threshold frequency", in the context of photolelectri...

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  17. Define the term "Intensity" in photon picture of electromagnetic radia...

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  18. What is the speed of light in a denser medium of polarising of polaris...

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  19. Why is the transmission of signals using sky waves restricted to frequ...

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  20. On what factors, does the maximum range of ground wave propagation dep...

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