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JEE Advanced Ph...

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  • Question 1
    4 / -1

    In the circuit shown (R = 1 Ω) current in branch CD is

  • Question 2
    4 / -1

    A Π s haped wire frame with a light, smooth, sliding wire connected to its open end (width of open end is l) is dipped in a soap solution and then raised, such that a soap film forms between the slider and the closed end of the wire frame. If the wire frame is now placed in a vertical plane and a block of mass m is hung from the slider then for mass m to remain in equilibrium the surface tension of the soap film is

  • Question 3
    4 / -1

    An artificial satellite of mass m is moving in a circular orbit at a height equal to the radius R of the Earth. Suddenly due to internal explosion the satellite breaks into two parts of equal masses. One part of the satellite stops just after the explosion and then falls to the surface of the Earth. The increase in the mechanical energy of the system (satellite + Earth) due to explosion will be (take acceleration due to gravity on the surface of Earth as g) 

  • Question 4
    4 / -1

    In position A kinetic energy of a particle is 60 J and potential energy is −20 J. In position B, kinetic energy is 100 J and potential energy is 40 J. Then in moving the particle from A to B

  • Question 5
    4 / -1

    A metal rod is fixed in horizontal position and a force of magnitude F is applied as shown. If RA = force by wall A and RB = force by wall B, then

  • Question 6
    4 / -1

    Two waves travelling in opposite directions produce a standing wave. The individual wave functions are given by y1 = 4 sin (3x – 2t) cm and y2 = 4 sin (3x + 2t) cm, where x and y are in centimeter. Now, select the correct statement(s) from the following.

  • Question 7
    4 / -1

    A point source S is placed anywhere in between two converging mirrors having focal lengths f and 2f, respectively as shown. The value of d for which only single image may be formed is /are 

  • Question 8
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    Directions For Questions

    In the circuit shown, initially keys K1, K2 and K3 are all open. Now certain events as described below are performed successively on the circuit which involve closing and opening of the keys K1, K2 and K3.  

    Event 1: Keys K1 and K2 are closed and K3 is left open.  

    Event 2: After a long time K2 is opened and K3 is closed.  

    Event 3: After a long time K1 is opened and K2 is closed. 

    ...view full instructions

    The time constants for charging of capacitor (completion of Event 1) and rise of current through the inductor (completion of Event 2) respectively are  

  • Question 9
    4 / -1

    Directions For Questions

    In the circuit shown, initially keys K1, K2 and K3 are all open. Now certain events as described below are performed successively on the circuit which involve closing and opening of the keys K1, K2 and K3.  

    Event 1: Keys K1 and K2 are closed and K3 is left open.  

    Event 2: After a long time K2 is opened and K3 is closed.  

    Event 3: After a long time K1 is opened and K2 is closed. 

    ...view full instructions

    Find the maximum charge that can come on the capacitor after the completion of all the three events 

  • Question 10
    4 / -1

    Directions For Questions

    In the circuit shown, initially keys K1, K2 and K3 are all open. Now certain events as described below are performed successively on the circuit which involve closing and opening of the keys K1, K2 and K3.  

    Event 1: Keys K1 and K2 are closed and K3 is left open.  

    Event 2: After a long time K2 is opened and K3 is closed.  

    Event 3: After a long time K1 is opened and K2 is closed. 

    ...view full instructions

    Find the maximum current that can pass through the inductor after the completion of all the three events

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