1
NEET 2018
MCQ (Single Correct Answer)
+4
-1
A tuning fork is used to produce resonance in
a glass tube. The length of the air column in
this tube can be adjusted by a variable piston.
At room temperature of 27°C two successive
resonances are produced at 20 cm and 73 cm
of column length. If the frequency of the tuning
fork is 320 Hz, the velocity of sound in air at
27°C is
2
NEET 2018
MCQ (Single Correct Answer)
+4
-1
A toy car with charge q moves on a frictionless
horizontal plane surface under the influence of
a uniform electric field $$\overrightarrow E $$
. Due to the force q$$\overrightarrow E $$
,
its velocity increases from 0 to 6 m s–1 in one
second duration. At that instant the direction of
the field is reversed. The car continues to move
for two more seconds under the influence of this
field. The average velocity and the average speed
of the toy car between 0 to 3 seconds are
respectively
3
NEET 2018
MCQ (Single Correct Answer)
+4
-1
A battery consists of a variable number n of
identical cells (having internal resistance r each)
which are connected in series. The terminals
of the battery are short-circuited and the current
I is measured. Which of the graphs shows the
correct relationship between I and n?
4
NEET 2018
MCQ (Single Correct Answer)
+4
-1
A carbon resistor of (47 $$ \pm $$ 4.7) k$$\Omega $$ is to be marked
with rings of different colours for its identification.
The colour code sequence will be
Paper analysis
Total Questions
Biology
90
Chemistry
45
Physics
45
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