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12. STATEMENT-1
A vertical iron rod has a coil of wire wound over it at the bottom end. An alternating current flows in the coil. The rod goes through a conducting ring as shown in the figure. The ring can float at a certain height above the coil.
Because
STATEMENT-2
In the above situation, a current is induced in the ring which interacts with the horizontal component of the magnetic field to produce an average force in the upward direction.
(A) Statement-1 is True, Statement-2 is True, Statement-2 is a correct explanation for statement-1.
(B) Statement-1 is True, Statement-2 is True, Statement-2 is not a correct explanation for statement-1.
(C) Statement-1 is True, Statement-2 is False
(D) Statement-1 is False, Statement-2 is True
13. STATEMENT-1
The total translational kinetic energy of all the molecules of a given mass of an ideal gas is 1.5 times the product of its pressure and its volume.
The molecules of a gas collide with each other and the velocities of the molecules change due to the collision
14. The speed of sound of the whistle is
(A) 340 m/s for passengers in A and 310 m/s for passengers in B
(B) 360 m/s for passengers in A and 310 m/s for passengers in B
(C) 310 m/s for passengers in A and 360 m/s for passengers in B
(D) 340 m/s for passengers in both the trains
15. The distribution of the sound intensity of the whistle as observed by the passengers in train A is best represented by
16. The spread of frequency as observed by the passengers in train B in
(A) 310 Hz
(B) 330 Hz
(C) 350 Hz
(D) 290 Hz
17. Light travels as a
(A) parallel beam in each medium
(B) convergent beam in each medium
(C) divergent beam in each medium
(D) divergent beam in one medium and convergent beam in other medium
18. The phases of the light wave at c, d, e and f are Φc, Φd, Φe and Φfrespectively. It is given that Φc ≠ Φf.
(A) Φc cannot be equal to Φd
(B) Φd can be equal to Φe
(C) (Φd - Φf) is equal to (Φc - Φe)
(D) (Φd - Φc) is not equal to (Φf - Φe)
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IIT-JEE-2007-Physics-Paper2 PAPER - II...