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Practice Test - Physics 19
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Question 1
A bullet fired into a fixed target loses half of its velocity after penetrating 3 cm. How much further it will penetrate (in cm) before coming to rest assuming that it faces constant resistance to motion?
Question 2
A pipe open at both ends has a fundamental frequency f in air. The pipe is dipped vertically in water so that half of it is in water. The fundamental frequency of the air column is now:
Question 3
The maximum number of possible interference maxima for slit separation equal to twice the wavelength in Young’s double-slit experiment is______.
Question 4
A carnot engine, having an efficiency of 
as heat engine, is used as a refrigerator. If the work done on the system is 10 J, the amount of energy absorbed from the reservoir at lower temperature is
as heat engine, is used as a refrigerator. If the work done on the system is 10 J, the amount of energy absorbed from the reservoir at lower temperature isQuestion 5
Two perfect gases at absolute temperatures 
are mixed. There is no loss of energy. The temperature of the mixture if the masses of the molecules are 
and the number of molecules in the gases are 
(both gases are of same nature)
are mixed. There is no loss of energy. The temperature of the mixture if the masses of the molecules are and the number of molecules in the gases are (both gases are of same nature)Question 6
For rolling condition, pick the correct option.
Question 7
In a common base mode of a transistor the collector current is 5.488 mA for an emitter current of 5.60 mA. The value of the base current amplification factor (β) will be
Question 8
The graph between angle of deviation (δ) and angle of incidence (i) for a triangular prism is represented by:
Question 9
The displacement of an object attached to a spring and executing simple harmonic motion is given by
metres. The time at which the maximum speed first occurs is
metres. The time at which the maximum speed first occurs isQuestion 10
Two identical wires A and B, each of length ‘
’, carry the same current I. Wire A is bent into a circle of radius of radius R and wire B is bent to form a square of side ‘a’. If BA and BB are the values of magnetic field at the centres of the circle and square respectively, then the ratio 
is :
’, carry the same current I. Wire A is bent into a circle of radius of radius R and wire B is bent to form a square of side ‘a’. If BA and BB are the values of magnetic field at the centres of the circle and square respectively, then the ratio is :- 1456 attempts
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Dec 16JEE & BITSAT
