Science 1 Marks Question

Which type of mirror can form a real image?

Which type of lens forms always a virtual image?

State the relation between radius of curvature and focal length of spherical mirrors.

As we know that an image is formed by the actual intersection of rays and can be obtained on the screen. So, state whether it is real or virtual image.

Which type of lens forms always a virtual image?

Is the image formed by a plane mirror is always upright?

Which type of lens forms always a virtual image?

Fill in the blanks: Image formed by a convex __________ is always virtual and smaller in size.

During sunny day, a pool of water appears to lie on the road some distance ahead. What type of image (virtual or real) do we see?

State various applications of lenses.

What is lateral inversion of flat mirror?

Mention any two letters of English alphabet whose image formed in a plane mirror appears exactly similar to the letters.

Is it possible to obtain the image on the screen when the candle is too closed to the concave mirror?

In the formation of a rainbow, what acts as tiny prisms?

Take a glass prism. Allow a narrow beam of sunlight to pass through a small hole in the window of a dark room to fall on one face of the prism, what will happen to the light?

State whether the following statements are True or False: A convex lens always produces a real image.

What is real image?

Briefly tell that how many reflected rays can be obtained from a single incident ray in respect of a plane mirror.

The bouncing of light by any smooth surface, like a mirror, is called.

What type of spherical mirror is used as reflectors in flashlights, and headlights of cars and scooters?

Apart from rainbow where else we can see seven colours of sunlight?

What is a ray?

Fill in the blank:
The inner surface of the reflector of a torch acts as a __________ mirror.

Explain why are concave and convex mirrors called spherical mirrors.

Which type of spherical mirror is used as reflectors at sharp turns or blind corners in big shopping malls or as rear-view mirrors in cars?

What type of image is formed on a cinema screen?

State in brief what we can demonstrate by rotating Newton’s colour disc very fastly.

Fill in the blank:
The outer shining surface of a round bottom steel bowl acts as a __________ mirror.

Consider if one half of a convex lens is covered with a black paper, then state whether this lens produces a complete image of the object.

Why does a concave mirror called a converging mirror?

Differentiate between real & virtual image?

What is the focal length of a plane mirror?

State uses of convex mirror.

An erect and enlarged image of an object is formed on a screen. Explain how this could be possible.

Which type of mirror can form a real image?

State whether the following statements are True or False: The sides of an object and its image formed by a concave mirror are always interchanged.

Fill in the blanks: An image formed by a __________ mirror is always of the same size as that of the object.

State in brief about the term lens.

Can you name the mirrors used as side mirrors in scooters?

How rainbow is formed in the sky?

Fill in the blanks:
An image that cannot be obtained on a screen is called ____.

Why does a convex mirror called a diverging mirror?

Fill in the blanks:
An image which can be obtained on a screen is called a _________ image.

Give an example of real image.

Name the colours include in the composition of sunlight.

Name the type of lens which diverges a beam of parallel rays of light.

Mention the name of lens whioh can converge the sun’s rays to a point and burn a hole in the piece of paper.

State whether the following statements are True or False:
An object can be seen only if it emits light.

Briefly mention whether mirror change the direction of light.

Mention the type of image formed on a cinema screen.

Name an object made from concave lens.

When does rainbow appear in the sky?

Fill in the blank: The outer surface of a flat steel plate acts as a ___________ mirror.

Which type of a surface can act as mirror?

Give the form of energy that produces the sensation of vision.

Allow the light coming out of the other face of the prism to fall on a white sheet of paper or a white wall. Explain your observation.

Can you get a real image at any distance of the object from the convex mirror?

What kind of image is formed by convex lens?

Why is it advised not to look directly towards the Sun?

What is virtual image?

State whether the following statements are True or False: A concave lens can be used to produce an enlarged and erect image.

Explain why concave mirror is known as a converging mirror.

Fill in the blank: The inner surface of a steel spoon acts as a ___________ mirror.

What is the name for concave lens?

Name the two types of spherical mirror.

Name the phenomenon that is involved in the formation of image of an object by a convex lens.

What happens when light rays are incident on a concave lens?

When you see yourself in the mirror, what type of image is formed?

What kind of image is formed by concave lens?

State uses of concave mirror.

Identify a spherical lens which is thicker at the Center and thinner at edges.

Fill in the blanks:
An image formed by a concave ___________ cannot be obtained on a screen.

A rotating disc has a pencil that serves as a rotator. The disc is covered with violet, indigo, blue, green, yellow, orange and red coloured papers. When the disc is rotated, it appears white instead of the individual colours. Why?

What is the relation between reflection of light and the image of an object?

Out of convex mirror and concave mirror, whose focus is situated behind the mirror?

Briefly mention what makes things visible to us.

Why do lemons kept in a glass of water appear to be enlarged?

Name the mirror having curved reflecting surface.

What is real image?

State the principle used in creating a mirror image.

Name the phenomenon that is involved in the formation of image of an object by a concave mirror.

Identify a spherical lens which is thinner at the Center and thicker at edges.

Give an example to show that the path of light is always straight and never curved.

What is image of an object?