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Class 10 Exam  >  Class 10 Notes  >  Assertion & Reason Type Questions: The Human Eye and the Colourful World

Class 10 Science Chapter 10 Assertion and Reason Questions - Human Eye and Colourful World

Q1:

Question for Assertion & Reason Type Questions: The Human Eye and the Colourful World
Try yourself:Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:

Assertion (A): Eye lens has the ability to focus clearly on the retina by adjusting its focal length.

Reason (R): This phenomenon is known as the power of accommodation.

View Solution

Q2:

Question for Assertion & Reason Type Questions: The Human Eye and the Colourful World
Try yourself: Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:

Assertion (A): Concave lens is used to correct myopia or short- sightedness.

Reason (R): A concave lens of suitable focal length diverges the parallel rays from the distant objects as if they are coming from the far point of the myopic eye. This helps the eye lens to form a clear image at the retina.

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Q3:

Question for Assertion & Reason Type Questions: The Human Eye and the Colourful World
Try yourself: Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:

Assertion (A): A white light on passing through prism splits into its component colours as such that the red light emerges nearest to the base of the prism.

Reason (R): Wavelength of red light is more than other component colours and hence, red light deviates least.

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Q4:

Question for Assertion & Reason Type Questions: The Human Eye and the Colourful World
Try yourself: Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:

Assertion (A): In the case of a rainbow, light at the inner surface of the water drop gets internally reflected.

Reason (R): The angle between the refracted ray and normal to the drop surface is greater than the critical angle.

View Solution

Q5:

Question for Assertion & Reason Type Questions: The Human Eye and the Colourful World
Try yourself: Direction: In the Following Questions, A Statement of Assertion (A) Is Followed by A Statement of Reason (R). Mark The Correct Choice As:

Assertion : Hypermetropia is the defect of the eye in which only farther objects are seen.

Reason : Hypermetropia is corrected by using converging lenses.

View Solution

Q6:

Question for Assertion & Reason Type Questions: The Human Eye and the Colourful World
Try yourself: Direction: In the Following Questions, A Statement of Assertion (A) Is Followed by A Statement of Reason (R). Mark The Correct Choice As:

Assertion : Myopia is due to the increased converging power of the eye lens.

Reason : Myopia can be corrected by using spectacles made from concave lenses.

View Solution

Q7:

Question for Assertion & Reason Type Questions: The Human Eye and the Colourful World
Try yourself: Direction: In the Following Questions, A Statement of Assertion (A) Is Followed by A Statement of Reason (R). Mark The Correct Choice As:

Assertion : Myopia is the defect of the eye in which only nearer objects are seen by the eye.

Reason : The eyeball is elongated.

View Solution

Q8:

Question for Assertion & Reason Type Questions: The Human Eye and the Colourful World
Try yourself: Direction: In the Following Questions, A Statement of Assertion (A) Is Followed by A Statement of Reason (R). Mark The Correct Choice As:

Assertion : The stars twinkle while the planet does not.

Reason : The stars are much bigger in size than the planets.

View Solution

Q9:

Question for Assertion & Reason Type Questions: The Human Eye and the Colourful World
Try yourself: Direction: In the Following Questions, A Statement of Assertion (A) Is Followed by A Statement of Reason (R). Mark The Correct Choice As:

Assertion : A normal human eye can clearly see all the objects beyond a certain minimum distance.

Reason : The human eye has the capacity of adjusting the focal length of eye lens.

View Solution

Q10:

Question for Assertion & Reason Type Questions: The Human Eye and the Colourful World
Try yourself: Direction: In the Following Questions, A Statement of Assertion (A) Is Followed by A Statement of Reason (R). Mark The Correct Choice As:

Assertion : Rainbow is an example of the dispersion of sunlight by the water droplets.

Reason : Light of shorter wavelength is scattered much more than light of larger wavelength.

View Solution

Q11:

Question for Assertion & Reason Type Questions: The Human Eye and the Colourful World
Try yourself: Direction: In the Following Questions, A Statement of Assertion (A) Is Followed by A Statement of Reason (R). Mark The Correct Choice As:

Assertion : A normal human eye can clearly see all the objects beyond a certain minimum distance.

Reason : The human eye has the capacity to adjust suitable the focal length of its lens to a certain extent.

View Solution

Q12:

Question for Assertion & Reason Type Questions: The Human Eye and the Colourful World
Try yourself: Direction: In the Following Questions, A Statement of Assertion (A) Is Followed by A Statement of Reason (R). Mark The Correct Choice As:

Assertion : The optical instruments are used to increase the size of the image of the object.

Reason : The optical instruments are used increase the visual angle.

View Solution

Q13:

Question for Assertion & Reason Type Questions: The Human Eye and the Colourful World
Try yourself: Direction: In the Following Questions, A Statement of Assertion (A) Is Followed by A Statement of Reason (R). Mark The Correct Choice As:

Assertion : The optical instruments are used to increase the size of the image of the object.

Reason : The optical instruments are used to increase the visual angle.

View Solution

Q14:

Question for Assertion & Reason Type Questions: The Human Eye and the Colourful World
Try yourself: Direction: In the Following Questions, A Statement of Assertion (A) Is Followed by A Statement of Reason (R). Mark The Correct Choice As:

Assertion : Sunlight reaches us without dispersion in the form of white light and not as its components.

Reason : Dispersion takes place due to variation of refractive index for different wavelength but in vacuum the speed of light is independent of wavelength and hence vacuum is a non-dispersive medium.

View Solution

Q15:

Question for Assertion & Reason Type Questions: The Human Eye and the Colourful World
Try yourself: Direction: In the Following Questions, A Statement of Assertion (A) Is Followed by A Statement of Reason (R). Mark The Correct Choice As:

Assertion : The sky looks dark and black instead of blue in outer space.

Reason : No atmosphere containing air in the outer space to scatter sunlight.

View Solution

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