All India Engineering / Architecture Entrance Examination (AIEEE)

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AIEEE 2008 Physics

Q. 11. The speed of sound in oxygen (O₂) at a certain temperature is 460 ms^-1. The speed of sound in helium (He) at the same temperature will be (assume both gases to be ideal)

1. 650 ms^-1
2. 330 ms^-1
3. 460 ms^-1
4. 500 ms^-1

Sol:

Q. 12. A 5V battery with internal resistance and a 2V battery with internal resistance are connected to a resistor as shown in the figure. The current in the resistor is

1. 0.03 A P₂ to P1
2. 0.27 A P₁ to P₂
3. 0.27 A P₂ to P₁
4. 0.03 A P₁ to P₂

Sol:

Q. 13. A body of mass m = 3.513 kg is moving along the x-axis with a speed of 5.00 ms^-1. The magnitude of its momentum is recorded as

1. 17.56 kg ms^-1
2. 17.57 kg ms^-1
3. 17. 6 kg ms^-1
4. 17.565 kg ms^-1

Sol: