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Day 48: MHT-CET Physics

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

  1. Question 1

    Structure of Atoms and Nuclei. Asked 4 times: 11 May 2024 S2, 19 Apr 2025 S2*, 11 Apr 2026 S2, 14 May 2026 S1 (* = numbers or wording changed that year) See all 4 times it was asked

    146
    Bohr model is applied to a particle of mass mm and charge qq is moving in a plane under the influence of a transverse magnetic field BB. The energy of the charged particle in nthn^{th} level will be (hh = Planck's constant)

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  2. Question 2

    Thermodynamics. Asked 4 times: 15 May 2023 S2*, 12 May 2024 S2*, 22 Apr 2025 S2*, 13 May 2026 S2 (* = numbers or wording changed that year) See all 4 times it was asked

    117
    A monoatomic ideal gas, initially at temperature T1T_1 is enclosed in a cylinder fitted with a frictionless piston. The gas is allowed to expand adiabatically to a temperature T2T_2 by releasing the piston suddenly. If L1L_1 and L2L_2 be the lengths of the gas column before and after expansion respectively, then T1T2\dfrac{T_1}{T_2} is

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  3. Question 3

    AC Circuits. Asked 4 times: 21 Apr 2025 S2, 25 Apr 2025 S1, 17 Apr 2026 S1, 13 May 2026 S1 See all 4 times it was asked

    138
    In an LCR series circuit, a. c. voltage source is connected in series. When L is removed from the circuit, the phase difference between the voltage and the current is π/3\pi/3. If instead C is removed, the phase difference is again π/3\pi/3. The power factor of the circuit is (tan⁡π3=3)\left(\tan\dfrac{\pi}{3} = \sqrt{3}\right)

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  4. Question 4

    Mechanical Properties of Fluids. Asked 4 times: 19 Apr 2025 S1*, 25 Apr 2025 S2, 26 Apr 2025 S2*, 13 May 2026 S1 (* = numbers or wording changed that year) See all 4 times it was asked

    110
    When one end of a capillary tube is dipped in water, water rises to a height h. The upward force of 105105 dyne due to surface tension is balanced by the force due to weight of water column. The inner circumference of the capillary is (surface tension of water = 7×10−27 \times 10^{-2} N/m)

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  5. Question 5

    Mechanical Properties of Fluids. Asked 4 times: 3 May 2023 S2*, 11 May 2023 S2, 12 May 2024 S2*, 13 May 2026 S1 (* = numbers or wording changed that year) See all 4 times it was asked

    111
    Two solid spheres of same material but of mass M and 8M fall simultaneously on a viscous liquid and their terminal velocities are V and nV, then the value of n is

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