The focal length of a lens for red light will be more than that for blue light. This is because red light has a longer wavelength, causing it to refract less, resulting in a larger focal length compared to blue light. For more visit here: https://www.tiwariacademy.com/ncert-solutions/class-12/physicRead more
The focal length of a lens for red light will be more than that for blue light. This is because red light has a longer wavelength, causing it to refract less, resulting in a larger focal length compared to blue light.
A biconvex lens of glass acts as a plane glass sheet when immersed in a liquid with the same refractive index as the glass. In this case, no refraction occurs at the lens-liquid interface, making the lens indistinguishable. For more visit here: https://www.tiwariacademy.com/ncert-solutions/class-12/Read more
A biconvex lens of glass acts as a plane glass sheet when immersed in a liquid with the same refractive index as the glass. In this case, no refraction occurs at the lens-liquid interface, making the lens indistinguishable.
When a convex lens is held in water, its focal length increases. Since water has a higher refractive index than air, the refractive power of the lens decreases, resulting in a longer focal length compared to its value in air. For more visit here: https://www.tiwariacademy.com/ncert-solutions/class-1Read more
When a convex lens is held in water, its focal length increases. Since water has a higher refractive index than air, the refractive power of the lens decreases, resulting in a longer focal length compared to its value in air.
A diamond cutter uses the high refractive index of diamond to create sharp, precise cuts. The greater refractive index causes light to refract more sharply, enhancing brilliance and ensuring the diamond's facets reflect light effectively for maximum sparkle. For more visit here: https://www.tiwariacRead more
A diamond cutter uses the high refractive index of diamond to create sharp, precise cuts. The greater refractive index causes light to refract more sharply, enhancing brilliance and ensuring the diamond’s facets reflect light effectively for maximum sparkle.
The lens will behave as a converging lens. Since the refractive index of water (1.33) is higher than that of the lens material (1.25), light will bend inward, causing the biconcave lens to act as a converging lens. For more visit here: https://www.tiwariacademy.com/ncert-solutions/class-12/physics/cRead more
The lens will behave as a converging lens. Since the refractive index of water (1.33) is higher than that of the lens material (1.25), light will bend inward, causing the biconcave lens to act as a converging lens.
The power of a convex lens increases when red light is replaced by violet light. This is because violet light has a shorter wavelength, resulting in greater refraction and a smaller focal length, thereby increasing the lens's power. For more visit here: https://www.tiwariacademy.com/ncert-solutions/Read more
The power of a convex lens increases when red light is replaced by violet light. This is because violet light has a shorter wavelength, resulting in greater refraction and a smaller focal length, thereby increasing the lens’s power.
The biconvex lens will become invisible when placed in a liquid with the same refractive index. This happens because there is no refraction or bending of light at the lens-liquid interface, making the lens indistinguishable. For more visit here: https://www.tiwariacademy.com/ncert-solutions/class-12Read more
The biconvex lens will become invisible when placed in a liquid with the same refractive index. This happens because there is no refraction or bending of light at the lens-liquid interface, making the lens indistinguishable.
In a liquid medium with the same refractive index as the lens (1.5), the focal length of the converging lens becomes infinite. This is because there is no refraction at the lens-liquid interface, preventing convergence of light rays. For more visit here: https://www.tiwariacademy.com/ncert-solutionsRead more
In a liquid medium with the same refractive index as the lens (1.5), the focal length of the converging lens becomes infinite. This is because there is no refraction at the lens-liquid interface, preventing convergence of light rays.
The refractive index of the liquid is 1.45. When the glass lens disappears in the liquid, it indicates that the refractive indices of both the lens and the liquid are the same, causing no refraction at the interface. For more visit here: https://www.tiwariacademy.com/ncert-solutions/class-12/physicsRead more
The refractive index of the liquid is 1.45. When the glass lens disappears in the liquid, it indicates that the refractive indices of both the lens and the liquid are the same, causing no refraction at the interface.
A convex lens forms a virtual image only when the object is within its focal length. The image is upright, magnified, and on the same side as the object. A concave lens always forms a virtual image, which is upright, diminished, and on the same side. For more visit here: https://www.tiwariacademy.coRead more
A convex lens forms a virtual image only when the object is within its focal length. The image is upright, magnified, and on the same side as the object. A concave lens always forms a virtual image, which is upright, diminished, and on the same side.
Will the focal length of a lens for red light be more, same or less than that for blue light?
The focal length of a lens for red light will be more than that for blue light. This is because red light has a longer wavelength, causing it to refract less, resulting in a larger focal length compared to blue light. For more visit here: https://www.tiwariacademy.com/ncert-solutions/class-12/physicRead more
The focal length of a lens for red light will be more than that for blue light. This is because red light has a longer wavelength, causing it to refract less, resulting in a larger focal length compared to blue light.
For more visit here:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-12/physics/chapter-9/
Under what condition does a biconvex lens of glass having a certain refractive index act as a plane glass sheet when immersed in a liquid?
A biconvex lens of glass acts as a plane glass sheet when immersed in a liquid with the same refractive index as the glass. In this case, no refraction occurs at the lens-liquid interface, making the lens indistinguishable. For more visit here: https://www.tiwariacademy.com/ncert-solutions/class-12/Read more
A biconvex lens of glass acts as a plane glass sheet when immersed in a liquid with the same refractive index as the glass. In this case, no refraction occurs at the lens-liquid interface, making the lens indistinguishable.
For more visit here:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-12/physics/chapter-9/
A convex lens is held in water. What change, if any, do you expect in its focal length?
When a convex lens is held in water, its focal length increases. Since water has a higher refractive index than air, the refractive power of the lens decreases, resulting in a longer focal length compared to its value in air. For more visit here: https://www.tiwariacademy.com/ncert-solutions/class-1Read more
When a convex lens is held in water, its focal length increases. Since water has a higher refractive index than air, the refractive power of the lens decreases, resulting in a longer focal length compared to its value in air.
For more visit here:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-12/physics/chapter-9/
The refractive index of diamond is much greater than that of glass. How does a diamond cutter makes use of this fact?
A diamond cutter uses the high refractive index of diamond to create sharp, precise cuts. The greater refractive index causes light to refract more sharply, enhancing brilliance and ensuring the diamond's facets reflect light effectively for maximum sparkle. For more visit here: https://www.tiwariacRead more
A diamond cutter uses the high refractive index of diamond to create sharp, precise cuts. The greater refractive index causes light to refract more sharply, enhancing brilliance and ensuring the diamond’s facets reflect light effectively for maximum sparkle.
For more visit here:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-12/physics/chapter-9/
A biconcave lens made of a transparent material of refractive index 1.25 is immersed in water of refractive index 1.33. Will the lens behave as a converging or a diverging lens ? Give reason.
The lens will behave as a converging lens. Since the refractive index of water (1.33) is higher than that of the lens material (1.25), light will bend inward, causing the biconcave lens to act as a converging lens. For more visit here: https://www.tiwariacademy.com/ncert-solutions/class-12/physics/cRead more
The lens will behave as a converging lens. Since the refractive index of water (1.33) is higher than that of the lens material (1.25), light will bend inward, causing the biconcave lens to act as a converging lens.
For more visit here:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-12/physics/chapter-9/
How does the power of a convex lens vary, if the incident red light is replaced by violet light?
The power of a convex lens increases when red light is replaced by violet light. This is because violet light has a shorter wavelength, resulting in greater refraction and a smaller focal length, thereby increasing the lens's power. For more visit here: https://www.tiwariacademy.com/ncert-solutions/Read more
The power of a convex lens increases when red light is replaced by violet light. This is because violet light has a shorter wavelength, resulting in greater refraction and a smaller focal length, thereby increasing the lens’s power.
For more visit here:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-12/physics/chapter-9/
How would a biconvex lens appear when placed in a trough of liquid having the same refractive index as that of lens?
The biconvex lens will become invisible when placed in a liquid with the same refractive index. This happens because there is no refraction or bending of light at the lens-liquid interface, making the lens indistinguishable. For more visit here: https://www.tiwariacademy.com/ncert-solutions/class-12Read more
The biconvex lens will become invisible when placed in a liquid with the same refractive index. This happens because there is no refraction or bending of light at the lens-liquid interface, making the lens indistinguishable.
For more visit here:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-12/physics/chapter-9/
A converging lens of refractive index 1.5 is kept in a liquid medium having same refractive index. What would be the focal length of the lens in this medium?
In a liquid medium with the same refractive index as the lens (1.5), the focal length of the converging lens becomes infinite. This is because there is no refraction at the lens-liquid interface, preventing convergence of light rays. For more visit here: https://www.tiwariacademy.com/ncert-solutionsRead more
In a liquid medium with the same refractive index as the lens (1.5), the focal length of the converging lens becomes infinite. This is because there is no refraction at the lens-liquid interface, preventing convergence of light rays.
For more visit here:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-12/physics/chapter-9/
A glass lens of refractive index 1.45 disappears when immersed in a liquid. What is the value of refractive index of the liquid?
The refractive index of the liquid is 1.45. When the glass lens disappears in the liquid, it indicates that the refractive indices of both the lens and the liquid are the same, causing no refraction at the interface. For more visit here: https://www.tiwariacademy.com/ncert-solutions/class-12/physicsRead more
The refractive index of the liquid is 1.45. When the glass lens disappears in the liquid, it indicates that the refractive indices of both the lens and the liquid are the same, causing no refraction at the interface.
For more visit here:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-12/physics/chapter-9/
What is the difference between virtual image formed by a convex lens and that formed by a concave lens?
A convex lens forms a virtual image only when the object is within its focal length. The image is upright, magnified, and on the same side as the object. A concave lens always forms a virtual image, which is upright, diminished, and on the same side. For more visit here: https://www.tiwariacademy.coRead more
A convex lens forms a virtual image only when the object is within its focal length. The image is upright, magnified, and on the same side as the object. A concave lens always forms a virtual image, which is upright, diminished, and on the same side.
For more visit here:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-12/physics/chapter-9/