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Use Biot-Savart law to calculate the magnetic field of a circular current carrying coil at its centre
Also determine the direction of the magnetic field in this case.
If the tension of the string is increased 4 times, what will be the frequency of this mode?
Write down the Newton’s formula for the velocity of sound in a gas medium with its discrepancy
Explain why sound waves are also called pressure waves.
Describe the formation of potential barrier.
Obtain the efficiency of a heat engine.
Define radius of gyration.
Calculate the moment of inertia of a thin uniform rod about an axis passing through its centre and perpendicular to its length.
The isotope carbon-14 has half life 5700 years. If the sample contains 10²² carbon-14 nuclei, find its activity.
Threshold frequency
Planck’s constant.
Describe the motion of electron and show that the path followed by it is parabolic.
What is cross field? Write one use of cross field.
If the source of sound and the listener move in the same direction with same velocity equal to half the velocity of sound, what is the change in frequency?
0%
25%
50%
100%
State Lenz law.
What is resonance in LCR series circuit?
Calculate the resonant frequency.
Calculate:
i. Number of turns in the secondary coil
What is the significance of the Clausius statement of the second law of thermodynamics?
Defines the maximum theoretical efficiency of a heat engine.
States that heat cannot spontaneously flow from a colder object to a hotter object.
Describes the relationship between entropy and the irreversibility of a process
Describes the direction of spontaneous change in an isolated system.