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Day 255: MHT-CET Physics

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

  1. Question 1

    Dual Nature of Radiation and Matter. Asked once: 25 Apr 2025 S1 (same type asked 2 times) See all 2 of this type

    9
    If the electron in hydrogen atom jumps from third Bohr orbit to ground state directly and the difference between energies of the two states is radiated in the form of photons. If the work function of the material is 4.1 eV , then stopping potential is nearly [Energy of electron in nth n^{\text{th~}} orbit =−13⋅6n2eV=\frac{- 13 \cdot 6}{n^{2}}eV ]

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  2. Question 2

    Oscillations. Asked once: 25 Apr 2025 S1 (same type asked 2 times) See all 2 of this type

    7
    Two particles 'A' and 'B' execute SHMs of periods ' TT ' and 3T2\frac{3T}{2}. If they start from the mean position then the phase difference between them, when the particle 'A' completes two oscillations will be

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  3. Question 3

    Thermal Properties of Matter. Asked once: 4 May 2023 S1 (same type asked 2 times) See all 2 of this type

    25
    Two rods of same length and material transfer a given amount of heat in 12 s when they are joined end to end. But when they are joined length wise parallel to each other they will transfer same amount of heat in same condition in time

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  4. Question 4

    Laws of Motion. Asked once: 17 Apr 2026 S1 (same type asked 2 times) See all 2 of this type

    104
    Three identical spheres, each of mass 'm' kg, are kept as shown in the figure, touching each other, with their centers on a straight line. If their centers are marked as A, B, C respectively, the distance of center of mass of the system from A is

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  5. Question 5

    Rotational Dynamics. Asked once: 22 Apr 2025 S1 (same type asked 2 times) See all 2 of this type

    25
    If force F→=−3i^+j^+5k^\overrightarrow{F}= - 3\widehat{i}+\widehat{j}+ 5\widehat{k} acts along r→=7i^+3j^+k^\overrightarrow{r}= 7\widehat{i}+ 3\widehat{j}+\widehat{k} then the torque acting at that point is

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