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Day 326: JEE Mains Physics

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

  1. Question 1

    Ray Optics. Asked once: 28 Jan 2026 S2 (same type asked 12 times) See all 12 of this type

    18
    For a transparent prism, if the angle of minimum deviation is equal to its refracting angle, the refractive index nn of the prism satisfies.

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  2. Question 2

    Electromagnetic Waves. Asked once: 11 Apr 2023 (same type asked 11 times) See all 11 of this type

    93
    A plane electromagnetic wave of frequency 20 MHzMHz propagates in free space along xx-direction. At a particular space and time, E→=6.6j^V/m\overrightarrow{E}= 6.6\widehat{j}V/m. What is B→\overrightarrow{B} at this point?

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  3. Question 3

    Thermodynamics. Asked once: 28 Jul 2022 (same type asked 11 times) See all 11 of this type

    114
    At a certain temperature, the degrees of freedom per molecule for gas is 8 . The gas performs 150 J150\text{ }J of work when it expands under constant pressure. The amount of heat absorbed by the gas will be ____\_\_\_\_ J.

  4. Question 4

    Units and Measurements. Asked once: 29 Jan 2024 (same type asked 10 times) See all 10 of this type

    93
    A physical quantity QQ is found to depend on quantities a,b,ca,b,c by the relation Q=a4 b3c2Q =\frac{a^{4}{\text{ }b}^{3}}{c^{2}}. The percentage error in a,ba,b and cc are 3%,4%3\%,4\% and 5%5\% respectively. Then, the percentage error in QQ is:

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  5. Question 5

    Alternating Current. Asked once: 6 Apr 2024 (same type asked 10 times) See all 10 of this type

    112
    For a given series LCR circuit it is found that maximum current is drawn when value of variable capacitance is 2.5nF2.5nF. If resistance of 200Ω200\Omega and 100mH100mH inductor is being used in the given circuit. The frequency of ac source is ____ ×103 Hz\times10^{3}\text{ }Hz. (given π2=10\pi^{2}= 10 )