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Test: Light - Class 7 MCQ


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20 Questions MCQ Test - Test: Light

Test: Light for Class 7 2024 is part of Class 7 preparation. The Test: Light questions and answers have been prepared according to the Class 7 exam syllabus.The Test: Light MCQs are made for Class 7 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Light below.
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Test: Light - Question 1

Which of the following statements is true about rectilinear propagation of light?

Detailed Solution for Test: Light - Question 1

Rectilinear propagation of light refers to the fact that light travels in a straight line. This means that when light passes through a transparent medium, such as air, it will continue to travel in a straight line until it encounters an obstacle or another medium.

Test: Light - Question 2

Which of the following is a result of the rectilinear propagation of light?

Detailed Solution for Test: Light - Question 2

Shadows are formed due to the rectilinear propagation of light. When an object blocks the path of light, the light cannot pass through that object and a shadow is formed on the opposite side of the object.

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Test: Light - Question 3

Which of the following statements is true about reflection of light?

Detailed Solution for Test: Light - Question 3

Reflection can occur on any surface, although the quality of the reflection may vary depending on the smoothness of the surface. When light strikes a surface, it may reflect off that surface at the same angle at which it struck the surface.

Test: Light - Question 4

Which type of mirror is used in a rearview mirror?

Detailed Solution for Test: Light - Question 4

Convex mirrors are commonly used in rearview mirrors because they provide a wider field of view than concave mirrors. This is because convex mirrors diverge light, which means that they spread light out and make objects appear smaller.

Test: Light - Question 5

Which of the following statements is true about plane mirrors?

Detailed Solution for Test: Light - Question 5

Plane mirrors always produce virtual images, which are images that cannot be projected onto a screen. Virtual images are formed by the apparent intersection of reflected rays of light.

Test: Light - Question 6

Which of the following statements is true about concave mirrors?

Detailed Solution for Test: Light - Question 6

Concave mirrors can produce both real and virtual images, depending on the location of the object relative to the mirror. Real images are formed when the object is located beyond the focal point of the mirror, while virtual images are formed when the object is located between the mirror and the focal point.

Test: Light - Question 7

Which of the following is true about convex mirrors?

Detailed Solution for Test: Light - Question 7

Convex mirrors always produce virtual images, regardless of the location of the object relative to the mirror. This is because convex mirrors diverge light, which means that they spread light out and make objects appear smaller.

Test: Light - Question 8

Which of the following is true about concave lenses?

Detailed Solution for Test: Light - Question 8

Concave lenses always produce virtual images, regardless of the location of the object relative to the lens. This is because concave lenses diverge light, which means that they spread light out and make objects appear smaller.

Test: Light - Question 9

Which of the following is an example of a reflecting surface?

Detailed Solution for Test: Light - Question 9

A reflecting surface is a surface that reflects light, such as a polished metal plate. When light strikes a reflecting surface, it is reflected back in a specific direction.

Test: Light - Question 10

Which of the following is true about spherical mirrors?

Detailed Solution for Test: Light - Question 10

Spherical mirrors can be either concave or convex, depending on the curvature of the mirror. The shape of a spherical mirror affects how light is reflected off of it.

Test: Light - Question 11

Which of the following types of mirrors can be used to create a magnified image?

Detailed Solution for Test: Light - Question 11

Concave mirrors can be used to create a magnified image when the object is located beyond the focal point of the mirror. This is because concave mirrors converge light, which means that they bring light rays together to form an image.

Test: Light - Question 12

What happens to light when it passes through a convex lens?

Detailed Solution for Test: Light - Question 12

When light passes through a convex lens, it is refracted inwards. This means that the light rays are bent towards the center of the lens, which can cause the image to appear larger or closer.

Test: Light - Question 13

Which of the following is true about colors?

Detailed Solution for Test: Light - Question 13

Colors are a property of light, which is made up of different wavelengths of electromagnetic radiation. Different colors have different wavelengths and frequencies.

Test: Light - Question 14

Which of the following colors has the shortest wavelength?

Detailed Solution for Test: Light - Question 14

Blue light has the shortest wavelength of the colors listed. This means that it has a higher frequency than the other colors and carries more energy.

Test: Light - Question 15

Which of the following is true about Newton's disc?

Detailed Solution for Test: Light - Question 15

Newton's disc is a device that produces a spectrum of colors when it is rotated. This is because the different colors of light have different wavelengths and are refracted by the disc at different angles.

Test: Light - Question 16

Which of the following statements is true about shadows?

Detailed Solution for Test: Light - Question 16

Shadows can be larger or smaller than the object casting them, depending on the position of the light source and the distance between the object and the surface on which the shadow is being cast.

Test: Light - Question 17

Which of the following is an example of a plane mirror?

Detailed Solution for Test: Light - Question 17

A plane mirror is a mirror with a flat surface. When light strikes a plane mirror, it is reflected back in a specific direction, creating a virtual image.

Test: Light - Question 18

Which of the following is true about the focal point of a concave mirror?

Detailed Solution for Test: Light - Question 18

The focal point of a concave mirror is located behind the mirror. This is where light rays that are parallel to the mirror's axis converge after being reflected off the mirror.

Test: Light - Question 19

Which of the following is an example of a convex lens?

Detailed Solution for Test: Light - Question 19

Convex lenses are used in many optical devices, including magnifying glasses, camera lenses, and telescope lenses. They are thicker in the middle than at the edges and converge light.

Test: Light - Question 20

Which of the following is true about the image formed by a concave lens?

Detailed Solution for Test: Light - Question 20

Concave lenses always produce virtual images, regardless of the location of the object relative to the lens. This is because concave lenses diverge light, which means that they spread light out and make objects appear smaller.

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