NEET Physics: Questions 201 - 206 of 2098

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Passage

Velocity at a general point P (x, y) for a horizontal projectile motion is given by

V = VX2+VY2 tanα = VYVX

The image is velocity graph.

The Image Is Velocity Graph.

here in following fig we shows that the projectile motion of particle at some point to another point.

α is angle made by v with horizontal in clockwise direction Trajectory equation for a horizontal projectile motion is given by x = v x t = ut

y =- ( 12 ) gt 2

Picture display is velocity graph.

Picture Display Is Velocity Graph.

here in fig we shows that angle α made by v with horizontal in clockwise direction

Eliminating t, We get y =- 12 gx2u2

Question number: 201 (2 of 3 Based on Passage) Show Passage

» Kinematics » Average Speed and Instantaneous Velocity

MCQ▾

Question

An aeroplane is in a level flying at an speed of 144 km/hr at an altitude of 1000 m. How far horizontally from a given target should a bomb be released from it to hit the target?

Choices

Choice (4) Response

a.

471.34 m

b.

671.43 m

c.

371.34 m

d.

571.43 m

Question number: 202 (3 of 3 Based on Passage) Show Passage

» Kinematics » Average Speed and Instantaneous Velocity

MCQ▾

Question

An aeroplane is flying horizontally with a velocity of 720 km/h at an altitude of 490 m. When it is just vertically above the target a bomb is dropped from it. How far horizontally it missed the target?

Choices

Choice (4) Response

a.

2000 m

b.

200 m

c.

1000 m

d.

100 m

Question number: 203

» Kinematics » Uniform Circular Motion

MCQ▾

Question

A particle completes 1.5 revolutions in a circular path of radius 2 cm. The angular displacement of the particle will be - (in radian)

Choices

Choice (4) Response

a.

2 π

b.

6 π

c.

π

d.

3 π

Question number: 204

» Kinematics » Motion in a Plane

MCQ▾

Question

When the angle of elevation of a gun are 60° and 30° respectively, the height it shoots are h1 and h2 respectively, hj/h2 equal to –

Choices

Choice (4) Response

a.

1/3

b.

2/1

c.

1/2

d.

3/1

Question number: 205

» Kinematics » Uniformly Accelerated Motion

MCQ▾

Question

The magnitude of the linear acceleration of the particle moving in a circle of radius 10 cm with uniform speed completing the circle in 4 s, will be –

Choices

Choice (4) Response

a.

2.5 π 2 cm/s 2

b.

2.5π cm/s 2

c.

5 π cm/s 2

d.

5 π 2 cm/s 2

Question number: 206

» Communication System » Propagation of Electromagnetic Waves in the Atmosphere

MCQ▾

Question

The vernier constant of two vernier calipers A and B are 0.01 cm and 0.01 mm respectively. Which one can measure the length of an object more accurately?

Choices

Choice (4) Response

a.

Accuracy in measurement does not depend on vernier constant

b.

Vernier B

c.

Vernier A

d.

All of the above

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