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Science Fill In The Blanks With Correct Alternative.[1 Marks Each]

Light · Jharkhand Board (JAC) STD 7 (Jharkhand - English Medium). 23 questions.

Questions

Fill In The Blanks With Correct Alternative.[1 Marks Each]

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23 questions · self-marked practice — reveal the answer and mark yourself.

Question 11 Mark
An image formed by a concave $.........$ cannot be obtained on a screen.
Answer
An image formed by a concave lens cannot be obtained on a screen.
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Question 21 Mark
An image which can be obtained on a screen is called a $.........$ image.
Answer
An image which can be obtained on a screen is called a real image
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Question 31 Mark
An image formed by a $.........$ mirror is always of the same size as that of the object.
Answer
An image formed by a plane mirror is always of the same size as that of the object.
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Question 41 Mark
Image formed by a convex $.........$ is always virtual and smaller in size.
Answer
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.
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Question 51 Mark
An image that cannot be obtained on a screen is called $.........$
Answer
An image that cannot be obtained on a screen is called virtual image.
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Question 61 Mark
Ravi is looking in a mirror, his right hand will appear to be at $.........$ in its image in the mirror.
Answer
Ravi is looking in a mirror, his right hand will appear to be at Left side in its image in the mirror.
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Question 71 Mark
The outer surface of a flat steel plate acts as a $.........$ mirror.
Answer
The outer surface of a flat steel plate acts as a plane mirror.
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Question 81 Mark
Image formed by a convex $.........$ is always virtual and smaller in size.
Answer
Image formed by a convex mirror is always virtual and smaller in size.
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Question 91 Mark
Although sunlight appears white, it is composed of $.........$ colours.
Answer
Although sunlight appears white, it is composed of Seven colours.
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Question 101 Mark
An image formed by a concave $.........$ cannot be obtained on a screen.
Answer
An image formed by a concave lens cannot be obtained on a screen.
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Question 111 Mark
An image formed by a $.........$ mirror is always of the same size as that of the object.
Answer
An image formed by a Plane mirror is always of the same size as that of the object.
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Question 121 Mark
A $.........$ is a curved transparent or translucent device that causes rays to either converge or diverge.
Answer
A lens is a curved transparent or translucent device that causes rays to either converge or diverge.
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Question 131 Mark
An image which can be obtained on a screen is called a $.........$ image.
Answer
An image which can be obtained on a screen is called a real image.
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Question 141 Mark
An image that cannot be obtained on a screen is called $.........$
Answer
An image that cannot be obtained on a screen is called virtual image.
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Question 151 Mark
$.........$ lens is also known as a magnifying glass.
Answer
Convex lens is also known as a magnifying glass.
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Question 161 Mark
An image formed by a $.........$ mirror is always of the same size as that of the object.
Answer
An image formed by a plane mirror is always of the same size as that of the object.
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Question 171 Mark
Fill in the Blank. Changing of left side of an object to right side of image is called $.........$
Answer
Changing of left side of an object to right side of image is called lateral inversion.
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Question 181 Mark
Fill in the Blank. The change in the direction of light by a mirror is called $.........$ of light.
Answer
The change in the direction of light by a mirror is called reflection of light.
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Question 191 Mark
Convex lenses are $.........$ in the middle than at the edges whereas concave lenses are in the middle than at the edges.
Answer
Convex lenses are thicker, thinner in the middle than at the edges whereas concave lenses are in the middle than at the edges.
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Question 211 Mark
A convex lens converges light rays. Therefore, it is also called a $.........$
Answer
A convex lens converges light rays. Therefore, it is also called a Converging lens.
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Question 221 Mark
Images that cannot be captured on a screen are called $.........$
Answer
Images that cannot be captured on a screen are called Virtual images.
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Question 231 Mark
Fill in the Blank. There are $.........$ types of spherical mirrors.
Answer
There are two types of spherical mirrors.
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