NEET (National Eligibility cum Medical Entrance Test) Physics: Questions 909 - 913 of 2142

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: 909

» Kinematics » Average Speed and Instantaneous Velocity

MCQ▾

Question

In the above example, the height ascended or descended, as the case may be, during that time i. e. 8 sec will be -

Choices

Choice (4) Response

a.

1.744 m

b.

6.976 m

c.

17.44 m

d.

None of the above

Question number: 910

» Kinematics » Average Speed and Instantaneous Velocity

MCQ▾

Question

A bullet of mass 0.01 kg travelling at a speed of 300 m/s strikes a block of mass 2 kg, which is suspended by a string of length 5 m. The center of gravity of the block is found to rise a vertical distance of 0.1 m The speed of the bullet after it emerges from the block will be -

Choices

Choice (4) Response

a.

220 m/s

b.

110 m/s

c.

20 m/s

d.

1.4 m/s

Question number: 911

» Laws of Motion » Laws of Friction

MCQ▾

Question

Block A weighs 4 N and block B weighs 8 N. The coefficient of kinetic friction is 0.25 for all surfaces. find the force F to slide B at a constant speed when A and B are connected by a light cord passing over a smooth Pulley.

Choices

Choice (4) Response

a.

2N

b.

5N

c.

3N

d.

1N

Question number: 912

» Laws of Motion » Laws of Friction

MCQ▾

Question

It is easier to pull a body than to push, because -

Choices

Choice (4) Response

a.

the body does not move forward when pushed

b.

the coefficient of friction is more in pushing than that in pulling

c.

the friction force is more in pushing than that in pulling

d.

None of the above

Question number: 913

» Kinematics » Average Speed and Instantaneous Velocity

MCQ▾

Question

A bullet of mass 20 g hits a block of mass 1.98 kg suspended from a massless string of length 100 cm and sticks to it. The bullet flies down at an angle of 30° to the horizontal with a velocity of 200 m/s. Through what height the block will rise-

Choices

Choice (4) Response

a.

0.75 m

b.

0.45 m

c.

0.30 m

d.

0.15 m

f Page
Sign In