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Day 54: MHT-CET Physics

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

  1. Question 1

    Optics (Ray). Asked 4 times: 15 May 2023 S2, 14 May 2024 S1, 19 Apr 2025 S1, 11 Apr 2026 S2 See all 4 times it was asked

    140
    A thin prism in air produces the angle of minimum deviation δ\delta. If the prism is immersed in water, the angle of minimum deviation for the same ray is (refractive index of water is 4/34/3 and that of glass prism is 3/23/2)

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  2. Question 2

    Wave Optics. Asked 4 times: 3 May 2023 S2*, 10 May 2024 S2*, 26 Apr 2025 S2*, 11 Apr 2026 S2 (* = numbers or wording changed that year) See all 4 times it was asked

    141
    In biprism experiment, the 4th4^{th} dark band is formed opposite to one of the slits. The wavelength of light used is (D=distance between source and screen, d= the distance between the slits)

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  3. Question 3

    Thermal Properties of Matter. Asked 4 times: 10 May 2023 S1*, 12 May 2024 S1*, 19 Apr 2025 S1*, 26 Apr 2025 S2 (* = numbers or wording changed that year) See all 4 times it was asked

    35
    A black sphere has radius RR whose rate of radiation is E at temperature T . If radius is made [R/2][R/2] and temperature 3T, the rate of radiation will be

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  4. Question 4

    Magnetic Fields Due to Electric Current. Asked 4 times: 2 May 2023 S1, 11 May 2023 S2, 15 May 2023 S1*, 23 Apr 2025 S1 (* = numbers or wording changed that year) See all 4 times it was asked

    35
    The magnetic field at the center of a current carrying circular coil of area ' AA ' is ' BB '. The magnetic moment ( MM ) of the coil is ( μ0=\mu_{0}= permeability of free space)

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  5. Question 5

    Thermal Properties of Matter. Asked 4 times: 4 May 2023 S2*, 11 May 2023 S1*, 11 May 2024 S2*, 22 Apr 2025 S2 (* = numbers or wording changed that year) See all 4 times it was asked

    47
    Two bodies A and B at temperatures ' T1T_{1} ' K and ' T2T_{2} ' K respectively have the same dimensions. Their emissivities are in the ratio 16:1. At T1=xTT_{1}= xT [T=T2T = T_{2}], they radiate the same amount of heat per unit area per unit time. The value of x is

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