Kinematics-Average Speed and Instantaneous Velocity (NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics): Questions 59 - 64 of 108

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 2142 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 550.00 or

Question number: 59

» Kinematics » Average Speed and Instantaneous Velocity

MCQ▾

Question

A train has to negotiate a curve of radius 400 m. By how much should the outer rail be raised with respect to inner rail for a speed of 48 km/hr. The distance between the rails is 1 m.

Choices

Choice (4) Response

a.

12 m

b.

12 cm

c.

4.5 m

d.

4.5 cm

Passage

Read the passage given below and answer the questions that follows:

Three of the fundamental constants of physics are the universal gravitational constant, G = 6.7 x 10 Wkg-V2, the speed of light, c - 3.0 x 108 m/s, and Planck’s constant, ft = 6.6x 10 - 34 Js-1. Two particles A and B are projected in the vertical plane with same initial velocity u0 from part (0, 0) and (, -h) towards each other as shown in figure at t = 0.

Question number: 60 (1 of 3 Based on Passage) Show Passage

» Kinematics » Average Speed and Instantaneous Velocity

MCQ▾

Question

The path of particle A with respect to particle B will be -

Choices

Choice (4) Response

a.

Straight line parallel to y-axis

b.

Straight line parallel to x-axis

c.

parabola

d.

None of the above

Question number: 61 (2 of 3 Based on Passage) Show Passage

» Kinematics » Average Speed and Instantaneous Velocity

MCQ▾

Question

Minimum distance between particle A and B during motion will be-

Choices

Choice (4) Response

a.

b.

c.

d.

h

Question number: 62 (3 of 3 Based on Passage) Show Passage

» Kinematics » Average Speed and Instantaneous Velocity

MCQ▾

Question

The time when separation between A and B is minimum is

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 63

» Kinematics » Average Speed and Instantaneous Velocity

MCQ▾

Question

A boy standing on a weighing machine observes his weight as 200 N. When he suddenly jumps upwards, his friend notices that the reading increased to 400 N. The acceleration by which the boy jumped will be

Choices

Choice (4) Response

a.

9.8 m/s 2

b.

29.4 m/s 2

c.

4.9 m/s 2

d.

14.7 m/s 2

Question number: 64

» Kinematics » Average Speed and Instantaneous Velocity

MCQ▾

Question

A disc of mass 5 gm is kept horizontally in air by firing bullets of mass 10 g each at the rate of 20/s. If the bullets rebound with same speed. The velocity with which the bullets are fired is –

Choices

Choice (4) Response

a.

9.28 cm/s

b.

1.25 cm/s

c.

1.96 cm/s

d.

4.89 cm/s

f Page