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Day 390: JEE Mains Physics

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

  1. Question 1

    Motion in a Straight Line. Asked once: 2021 Paper 20 (same type asked 5 times) See all 5 of this type

    27
    If the velocity of a body related to displacement xx is given by v=5000+24x m/sv =\sqrt{5000 + 24x}\text{ }m/s, then the acceleration of the body is ..... m/s2m/s^{2}.

  2. Question 2

    Wave Optics. Asked once: 25 Jun 2022 (same type asked 5 times) See all 5 of this type

    13
    The two light beams having intensities I and 9I interfere to produce a fringe pattern on a screen. The phase difference between the beams is π2\frac{\pi}{2} at point PP and π\pi at point QQ. Then the difference between the resultant intensities at PP and QQ will be:

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  3. Question 3

    Alternating Current. Asked once: 25 Jun 2022 (same type asked 5 times) See all 5 of this type

    119
    In a series LCR circuit, the inductance, capacitance and resistance are L=100mH,C=100μFL = 100mH,C = 100\mu F and R=R = 10Ω10\Omega respectively. They are connected to an ACAC source of voltage 220 V220\text{ }V and frequency of 50 Hz50\text{ }Hz. The approximate value of current in the circuit will be ____\_\_\_\_ A.

  4. Question 4

    Dual Nature of Radiation and Matter. Asked once: 2021 Paper 5 (same type asked 5 times) See all 5 of this type

    18
    The stopping potential in the context of photoelectric effect depends on the following property of incident electromagnetic radiation:

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  5. Question 5

    Electromagnetic Waves. Asked once: 28 Jul 2022 (same type asked 5 times) See all 5 of this type

    105
    Sun light falls normally on a surface of area 36 cm236{\text{ }cm}^{2} and exerts an average force of 7.2×10−9 N7.2 \times10^{- 9}\text{ }N within a time period of 20 minutes. Considering a case of complete absorption, the energy flux of incident light is

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