Science 1 Marks Question

A concave mirror can form real image of an object. The nature of the image depends on the distance of the object from the concave mirror.

A concave lens always forms a virtual image of an object.

Since, after the actual intersection of rays, the image obtained on the screen is always real image.

A concave lens always forms a virtual image of an object.

Yes, the image formed by the plane mirror is always upright.

A concave lens always forms a virtual, erect and smaller image than the object.

False.
The image that can be obtained on a screen is called a real image. Virtual images cannot be obtained on a screen.

Image formed by a convex mirror is always virtual and smaller in size.
A convex mirror forms a virtual, diminished and upright image of an object.

Virtual image: The pool of water is a mirage (illusion).

Lenses are used in magnifying glasses, peep holes, cameras, bioscopes, binoculars, telescopes, microscopes and projectors.

A lateral inversion is reversal of image formed by a mirror, the left side of the object is seen on the right side in the image, and right side of the object appears to be on the left side in the image.

Since, image formed by the plane mirror shows lateral inversion, i.e. left seems to right or vice-versa. But in the case of alphabets A and H, these letters show the same image in the plane mirror.

No, when the candle is too closed to the concave mirror.

In the formation of a rainbow, the raindrops suspended in the atmosphere acts as tiny prism.

The light will bend when it passes through the prism.

False.
A convex lens can form real or virtual, inverted or erect magnified and diminished images depending upon the position of object.

An image which can be obtained on a screen is called a real image.

For a single incident ray, there will be only one reflected ray that can be obtained in respect of a plane mirror.

Reflection of light.

True.
The image formed by a concave mirror can be real or virtual, enlarged or diminished, and erect or inverted, depending upon the distance of the object from the mirror.

Concave mirror.

The direction of the path in which light is travelling is called a ray.

The inner surface of the reflector of a torch acts as a Concave mirror.
It acts as a concave mirror to obtain a parallel beam of light.

Concave and convex mirrors are the parts of sphere whose one side is polished or silvered. So, they are called spherical mirrors.

Convex mirror.

Real image.

By rotating Newton’s colour disc, we can demonstrate that when seven colours are mixed together, then a white colour is formed.

The outer shining surface of a round bottom steel bowl acts as a Convex mirror.
It acts as a convex mirror because it forms virtual, erect and diminished image in spite of the position of an object.

If one half of a convex lens is covered with a black paper, then yes, the convex lens will produce the complete image of the object.

Concave mirror is called a converging mirror because parallel rays of light fall on the mirror bends towards (converge at) a point called focus.

Real image can be obtained on a screen Image e.g. Plane Mirror. But virtual Image cannot be obtained on a screen e.g. Pinhole Camera, Photograph Camera.

Infinite.

Convex mirror are used as reflectors at sharp turns and tricky or 'blind' corners and in parking lots, and as rear-view mirrors in cars and on motorcycles.

False.
The image formed by a convex mirror is always virtual, diminished and erect.

An erect and enlarged image of an object is formed only by the concave mirror or convex lens when object is inverted and placed between F and 2F.

A concave mirror can form real image of an object. The nature of the image depends on the distance of the object from the concave mirror.

True.
The image formed by a concave mirror shows lateral inversion, i.e. left seems to be right and right seems to be left.

An image formed by a plane mirror is always of the same size as that of the object.

A transparent material which is bounded by both or one spherical surface is known as a lens.

Yes, in the side mirror of scooters, convex mirror is used to have a wider field of view of the traffic.

A rainbow is formed by the refraction and reflection of the sun's rays through raindrops.

An image that cannot be obtained on a screen is called virtual image.
A virtual image cannot be obtained on a screen. Only real images can be obtained on a screen.

Convex mirror is called a diverging mirror because parallel rays of light fall on it bend away (diverge) after reflection.

False.
A concave mirror can form both real and virtual images. The nature of the image depends on the distance of the object from the mirror.

An image which can be obtained on a screen is called a real image.
Only real images can be obtained on a screen.

True.
The image formed by a concave lens is always virtual, erect and diminished.

In a camera, images are real and can be captured on the negative, which acts as a screen.