RPET Gas Paper

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Here is the exam paper
The Pendulum of a grand-father’s clock swings 10 cm from side to side per second. Assuming it to be a simple pendulum, show that the peak velocity of the bob (in cm/sec) is nearly :
(1) 16
(2) 12
(3) 8
(4) 4

Ball I having 1 kg mass strikes a glancing blow to another ball II at rest in an elastic collision with a speed of 5m/s. Ball I then moves off at right angle to its initial direction at a speed of 4 m/s. The momentum of ball II after collision in magnitude would be nearly :
(1) 5
(2) 6
(3) 1
(4) 2

For a gm molecule of hydrogen and helium gases two specific heats (Cp and Cv) are found. Choose the correct statement concerning these specific heats:
(1) The ratio Cp / Cv for both gases is equal
(2) The ratio Cp / Cv for helium is more than for hydrogen.
(3) The ratio Cp / Cv for hydrogen is more than for helium
(4) The difference (Cp - Cv) for both is unequal

Two slits are placed 2 mm apart and 300 cm from the screen. When light of 6000 angstroms is used, the bright lines of the interference pattern will be separated by a distance in mm equal to :
(1) 3.1
(2) 4.15
(3) 0.90
(4) 9.00

Two locomotives moving with a speed of 36 km/ hr recede from each other, One of the locomotives whistles with a frequency of 200 Hz. Taking velocity of sound in air to be 340 m/s, the pitch of whistle (in Hz) as heard by an observer in the other locomotive will be :
(1) 188
(2) 212
(3) 200
(4) 224

What is the maximum charge (in coulombs) that can be conveyed to a conducting sphere of diameter 10 cm, if the breakdown voltage of air. is 2 x 106 volts/m ?
(1) 2.0 x 10-4
(2) 5.6 x 10-7
(3) 5.6 x 10-2
(4) 2.0 x 102

In a potentiometer a long uniformly thick resistance wire is used to have
(1) high resistance of potentiometer
(2) small heating of the wire
(3) high potential drop along the wire
(4) uniform and small potential gradient

Voltage of a power line at a given place is 220V. The peak voltage (in volts) will nearly be :
(1) 440
(2) 220
(3) 310
(4) 345

The wave length of first line of the Lyman series of a ten times ionized Na atom (Z = 11) is about (the first of the Lyman series for hydrogen is 1216 Å or 1.216 x 10-7 m) :
(1) 0.1 Å
(2) 10 Å
(3) 103 Å
(4) l00 Å


Rajasthan Pre Medical Entrance Test exam sample paper

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