PYQ Vault

Day 208: CBSE Class 10 Science

5 questions. Try each one first, then open its answer.

  1. Question 1

    The Human Eye and the Colourful World. Asked once: 2023 (same type asked 4 times)

    25 (b)
    It is observed that the power of an eye to see nearby objects as well as far off objects diminishes with age. (i) Give reason for the above statement. (ii) Name the defect that is likely to arise in the eyes in such a condition. (iii) Draw a labelled ray diagram to show the type of corrective lens used for restoring the vision of such an eye.

  2. Question 2

    The Human Eye and the Colourful World. Asked once: 2025 (same type asked 4 times)

    13
    The white light entering a glass prism, gets split into its constituent colours. It is observed that :

    Tap an option to check your answer.

  3. Question 3

    The Human Eye and the Colourful World. Asked once: 2024 (same type asked 4 times)

    Two statements are given, one labelled Assertion (A) and the other labelled Reason (R). Select the correct answer from the options given below.
    19
    Assertion (A) : The colour of clear sky appears blue. Reason (R) : Light of blue colour has longer wavelength as compared to the light of red colour so it is scattered more in the upper atmosphere.

    Tap an option to check your answer.

  4. Question 4

    The Human Eye and the Colourful World. Asked once: 2025 (same type asked 4 times)

    14
    The part of human eye which controls the amount of light entering into it.

    Tap an option to check your answer.

  5. Question 5

    Heredity. Asked once: 2022 (same type asked 4 times)

    6 (a)
    Mendel crossed two pea plants with visible contrasting characteristics and found that there were no half-way characteristics in the plants of F1\mathrm{F_1} progeny. Explain the reason for this observation of Mendel.