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Day 331: MHT-CET Physics

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

  1. Question 1

    Kinetic Theory of Gases. Asked once: 19 May 2026 S2

    117
    Two identical containers A and B with friction-less pistons contain the same ideal gas at the same temperature and the same volume, VV. The mass of gas in A is mAm_A and that in B is mBm_B. The gas in each cylinder is now allowed to expand isothermally to the same final volume 2V2V. The changes in pressure in A and B are found to be Δp\Delta p and 3Δp3\Delta p respectively. Then

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  2. Question 2

    Laws of Motion. Asked once: 19 May 2026 S1

    108
    A cricket ball of mass 120120 g is moving with a velocity of 88 m/s and is hit by a bat so that the ball gets turned back with a velocity of 1212 m/s. If the duration of contact between the ball and bat is 0.020.02 s, the impulse (in Ns\mathrm{Ns}) given to the ball by the bat is

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  3. Question 3

    Magnetic Fields Due to Electric Current. Asked once: 19 May 2026 S1

    133
    A rectangular coil of effective area 0.04 m20.04\ \mathrm{m^2} is suspended freely in a radial magnetic field of 0.02 Wb/m20.02\ \mathrm{Wb/m^2}. The torsional constant of the suspension fibre is 5×10−9 Nm/degree5 \times 10^{-9}\ \mathrm{Nm/degree}. If a current of 250 μA250\ \mu\mathrm{A} is passed through it, then the angle through which it rotates is

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  4. Question 4

    Magnetic Materials. Asked once: 14 May 2026 S2

    133
    A paramagnetic substance in the form of a cube with sides 11 cm has a magnetic dipole moment 20×10−620 \times 10^{-6} J/T when a magnetic intensity 60×10360 \times 10^3 A/m is applied. Its magnetic susceptibility is

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  5. Question 5

    Mechanical Properties of Fluids. Asked once: 19 May 2026 S2

    111
    Which of the following is NOT TRUE? a. When soluble substance is dissolved in water, the surface tension of water increases. b. When sparingly soluble substance is mixed with water, surface tension of water increases. c. When insoluble impurity is added into the water, surface tension of water decreases. d. In case of molten copper or molten cadmium, the surface tension increases with increase in its temperature.

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