1
NEET 2016 Phase 2
MCQ (Single Correct Answer)
+4
-1
A given sample of an ideal gas occupies a volume V at a pressure P and absolute temperature T. The mass of each molecule of the gas is m. Which of the following gives the density of the gas ?
A
P/(kT)
B
Pm/(kT)
C
P/(KTV)
D
mkT
2
NEET 2016 Phase 2
MCQ (Single Correct Answer)
+4
-1
A body of mass m is attached to the lower end of a spring whose upper end is fixed. The spring has negligible mass. When the mass m is slightly pulled down and released, it oscillates with a time period of 3s. When the mass m is increased by 1 kg, the time period of oscillations becomes 5 s. The value of m in kg is
A
$${3 \over 4}$$
B
$${4 \over 3}$$
C
$${{16} \over 9}$$
D
$${9 \over {16}}$$
3
NEET 2016 Phase 2
MCQ (Single Correct Answer)
+4
-1
Three sound waves of equal amplitudes have frequencies (n $$-$$ 1), n, (n + 1). They superimpose to give beats. The number of beats produced per second will be
A
1
B
4
C
3
D
2
4
NEET 2016 Phase 2
MCQ (Single Correct Answer)
+4
-1
The second overtone of an open organ pipe has the same frquency as the first overtone of a closed pipe L metre long. The length of the open pipe will be
A
L
B
2L
C
$${L \over 2}$$
D
4L
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