1
NEET 2016 Phase 2
MCQ (Single Correct Answer)
+4
-1
Change Language
The temperature inside a refrigerator is t2 oC. The amount of heat delivered to the room for each joule of electrical energy consumed ideally will be
A
$${{{t_1}} \over {{t_1} - {t_2}}}$$
B
$${{{t_1} + 273} \over {{t_1} - {t_2}}}$$
C
$${{{t_2} + 273} \over {{t_1} - {t_2}}}$$
D
$${{{t_1} + {t_2}} \over {{t_1} + 273}}$$
2
NEET 2016 Phase 2
MCQ (Single Correct Answer)
+4
-1
Change Language
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
3
NEET 2016 Phase 2
MCQ (Single Correct Answer)
+4
-1
Change Language
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
$${9 \over {16}}$$
4
NEET 2016 Phase 2
MCQ (Single Correct Answer)
+4
-1
Change Language
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
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