PYQ Vault
EbooksTutor

Day 323: JEE Mains Physics

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

  1. Question 1

    Alternating Current. Asked once: 25 Jun 2022 (same type asked 3 times) See all 3 of this type

    9
    Match List-I with List-II:
    List-IList-II
    (A) AC generator(I) Detects the presence of current in the circuit
    (B) Galvanometer(II) Converts mechanical energy into electrical energy
    (C) Transformer(III) Works on the principle of resonance in AC circuit
    (D) Metal detector(IV) Changes an alternating voltage for smaller or greater value
    Choose the correct answer from the options given below:

    Tap an option to check your answer.

  2. Question 2

    Current Electricity. Asked once: 14 Jun 2022 (same type asked 3 times) See all 3 of this type

    29
    In a potentiometer arrangement, a cell gives a balancing point at 75 cm75\text{ }cm length of wire. This cell is now replaced by another cell of unknown emf. If the ratio of the emf's of two cells respectively is 3:23:2, the difference in the balancing length of the potentiometer wire in above two cases will be ____\_\_\_\_ cmcm.

  3. Question 3

    Electromagnetic Waves. Asked once: 27 Jun 2022 (same type asked 3 times) See all 3 of this type

    12
    Match List-I with List - II:
    List-IList-II
    (A) Ultraviolet rays(i) Study crystal structure
    (B) Microwaves(ii) Greenhouse effect
    (C) Infrared waves(iii) Sterilizing surgical instrument
    (D) X-rays(iv) Radar system
    Choose the correct answer from the options given below:

    Tap an option to check your answer.

  4. Question 4

    Laws of Motion. Asked once: 14 Jun 2022 (same type asked 3 times) See all 3 of this type

    6
    A block of mass 10 kg10\text{ }kg starts sliding on a surface with an initial velocity of 9.8 ms−19.8{\text{ }ms}^{- 1}. The coefficient of friction between the surface and block is 0.5. The distance covered by the block before coming to rest is: [use g=9.8 ms−2g = 9.8{\text{ }ms}^{- 2} ]

    Tap an option to check your answer.

  5. Question 5

    Nuclei. Asked once: 26 Jun 2022 (same type asked 3 times) See all 3 of this type

    18
    How many alpha and beta particles are emitted when Uranium  92U238\ _{92}U^{238} decays to lead  82 Pb206\ _{82}{\text{ }Pb}^{206} ?

    Tap an option to check your answer.