A convex lens consistently generates a virtual image when the object is positioned within its focal length. This virtual image is always upright and appears on the same side as the object. Light rays passing through the convex lens diverge, creating the illusion of the image originating from behindRead more
A convex lens consistently generates a virtual image when the object is positioned within its focal length. This virtual image is always upright and appears on the same side as the object. Light rays passing through the convex lens diverge, creating the illusion of the image originating from behind the lens. Thus, whether near or far, a convex lens forms a virtual image that cannot be projected onto a screen, providing a visual representation that’s not tangible but appears as if located behind the lens.
1. Heating Effect: Electric current passing through a conductor generates heat. This effect is used in devices like electric heaters and toasters, where electricity heats elements to produce warmth or cook food. 2. Magnetic Effect: When an electric current flows through a wire, it creates a magneticRead more
1. Heating Effect: Electric current passing through a conductor generates heat. This effect is used in devices like electric heaters and toasters, where electricity heats elements to produce warmth or cook food.
2. Magnetic Effect: When an electric current flows through a wire, it creates a magnetic field around it. This principle is applied in electromagnets used in speakers, doorbells, and magnetic cranes.
When an electric current flows through a wire, it creates a magnetic field around it. A compass needle aligns with the Earth's magnetic field, pointing north-south. When the current passes nearby, its magnetic field affects the compass needle, causing it to deflect from its usual direction. This hapRead more
When an electric current flows through a wire, it creates a magnetic field around it. A compass needle aligns with the Earth’s magnetic field, pointing north-south. When the current passes nearby, its magnetic field affects the compass needle, causing it to deflect from its usual direction. This happens because the magnetic field produced by the current interferes with the Earth’s magnetic field, showcasing the connection between electricity and magnetism, and how a current affects nearby magnetic objects like the compass.
No, it's unsafe to replace a fuse with a piece of wire. Fuses protect circuits by breaking when there's too much current, preventing fires. Using wire in place of a fuse bypasses this safety feature, risking overheating, fires, and harm. Fuses are crucial safety components in electrical systems. It'Read more
No, it’s unsafe to replace a fuse with a piece of wire. Fuses protect circuits by breaking when there’s too much current, preventing fires. Using wire in place of a fuse bypasses this safety feature, risking overheating, fires, and harm. Fuses are crucial safety components in electrical systems. It’s important to use the right fuse to safeguard against overloads. Always consult a qualified electrician for proper repairs to ensure safety in the home.
Here are the characteristics of the image formed by a plane mirror in bullet points: - Virtual Image: Not real, can't be projected. - Upright Image: Same orientation as the object. - Same Size as the Object: Maintains original dimensions. - Equal Distance: Appears at the same distance behind the mirRead more
Here are the characteristics of the image formed by a plane mirror in bullet points:
– Virtual Image: Not real, can’t be projected.
– Upright Image: Same orientation as the object.
– Same Size as the Object: Maintains original dimensions.
– Equal Distance: Appears at the same distance behind the mirror as the object in front.
– Laterally Inverted: Appears reversed from left to right.
These characteristics define the reflection produced by a plane mirror, showcasing how the image retains specific qualities while being a virtual representation.
Which type of lens forms always a virtual image?
A convex lens consistently generates a virtual image when the object is positioned within its focal length. This virtual image is always upright and appears on the same side as the object. Light rays passing through the convex lens diverge, creating the illusion of the image originating from behindRead more
A convex lens consistently generates a virtual image when the object is positioned within its focal length. This virtual image is always upright and appears on the same side as the object. Light rays passing through the convex lens diverge, creating the illusion of the image originating from behind the lens. Thus, whether near or far, a convex lens forms a virtual image that cannot be projected onto a screen, providing a visual representation that’s not tangible but appears as if located behind the lens.
See lessName any two effects of electric current.
1. Heating Effect: Electric current passing through a conductor generates heat. This effect is used in devices like electric heaters and toasters, where electricity heats elements to produce warmth or cook food. 2. Magnetic Effect: When an electric current flows through a wire, it creates a magneticRead more
1. Heating Effect: Electric current passing through a conductor generates heat. This effect is used in devices like electric heaters and toasters, where electricity heats elements to produce warmth or cook food.
2. Magnetic Effect: When an electric current flows through a wire, it creates a magnetic field around it. This principle is applied in electromagnets used in speakers, doorbells, and magnetic cranes.
See lessWhen the current is switched on through a wire, a compass needle kept nearby gets deflected from its north-south position. Explain.
When an electric current flows through a wire, it creates a magnetic field around it. A compass needle aligns with the Earth's magnetic field, pointing north-south. When the current passes nearby, its magnetic field affects the compass needle, causing it to deflect from its usual direction. This hapRead more
When an electric current flows through a wire, it creates a magnetic field around it. A compass needle aligns with the Earth’s magnetic field, pointing north-south. When the current passes nearby, its magnetic field affects the compass needle, causing it to deflect from its usual direction. This happens because the magnetic field produced by the current interferes with the Earth’s magnetic field, showcasing the connection between electricity and magnetism, and how a current affects nearby magnetic objects like the compass.
See lessAn electrician is carrying out some repairs in your house. He wants to replace a fuse by a piece of wire. Would you agree? Give reasons for your response.
No, it's unsafe to replace a fuse with a piece of wire. Fuses protect circuits by breaking when there's too much current, preventing fires. Using wire in place of a fuse bypasses this safety feature, risking overheating, fires, and harm. Fuses are crucial safety components in electrical systems. It'Read more
No, it’s unsafe to replace a fuse with a piece of wire. Fuses protect circuits by breaking when there’s too much current, preventing fires. Using wire in place of a fuse bypasses this safety feature, risking overheating, fires, and harm. Fuses are crucial safety components in electrical systems. It’s important to use the right fuse to safeguard against overloads. Always consult a qualified electrician for proper repairs to ensure safety in the home.
See lessState the characteristics of the image formed by a plane mirror.
Here are the characteristics of the image formed by a plane mirror in bullet points: - Virtual Image: Not real, can't be projected. - Upright Image: Same orientation as the object. - Same Size as the Object: Maintains original dimensions. - Equal Distance: Appears at the same distance behind the mirRead more
Here are the characteristics of the image formed by a plane mirror in bullet points:
– Virtual Image: Not real, can’t be projected.
– Upright Image: Same orientation as the object.
– Same Size as the Object: Maintains original dimensions.
– Equal Distance: Appears at the same distance behind the mirror as the object in front.
– Laterally Inverted: Appears reversed from left to right.
These characteristics define the reflection produced by a plane mirror, showcasing how the image retains specific qualities while being a virtual representation.
See less