1
You visited us
1
times! Enjoying our articles?
Unlock Full Access!
Byju's Answer
Standard IX
Physics
Air Pressure
When a plane ...
Question
When a plane moves along the runway, the air above the wing speeds up more, So the pressure
A
Lowers
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
B
Increases
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
Raises
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
No Pressure
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution
The correct option is
A
Lowers
According to Bernoulli's theorem
P
+
ρ
g
h
+
1
2
ρ
v
2
=
c
o
n
s
t
a
n
t
⟹
When
v
is increases, then pressure
(
P
)
is lowers.
Suggest Corrections
0
Similar questions
Q.
Air is streaming past a horizontal air plane wing such that its speed in 120 m/s over the upper surface and 90 m/s at the lower surface. If the density of air is 1.3 kg per
m
e
t
r
e
3
and the wing is 1o m long and has an average width of 2m , then the difference of the pressure on the two sides of the wing of
Q.
Let air be at rest at the front edge of a wing and air passing over the surface of wing at a fast speed v. If density of air is
ρ
, the highest value for v in streamline flow when atmospheric pressure is
P
a
t
m
o
s
p
h
e
r
e
is:
Q.
An aeroplane wing has an area
50
m
2
. The speed of air flowing above the wing is
100
m
s
−
1
and below the wings is
80
m
s
−
1
. The aerodynamic lifting force acting on the aeroplane wing if density of air is
1.3
k
g
m
−
3
is _____ N.
Q.
As we go up above sea level, the air pressure
.
Q.
The velocity-displacement for a jet plane on a straight runway is shown in. Determine the speed and acceleration of the jet plane at
s
=
150
m
View More
Join BYJU'S Learning Program
Grade/Exam
1st Grade
2nd Grade
3rd Grade
4th Grade
5th Grade
6th grade
7th grade
8th Grade
9th Grade
10th Grade
11th Grade
12th Grade
Submit
Related Videos
Air Pressure
PHYSICS
Watch in App
Explore more
Air Pressure
Standard IX Physics
Join BYJU'S Learning Program
Grade/Exam
1st Grade
2nd Grade
3rd Grade
4th Grade
5th Grade
6th grade
7th grade
8th Grade
9th Grade
10th Grade
11th Grade
12th Grade
Submit
AI Tutor
Textbooks
Question Papers
Install app