Kinematics (NEET (National Eligibility cum Medical Entrance Test) Physics): Questions 75 - 77 of 233

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Question number: 75

» Kinematics » Scalars and Vectors » Scalar and Vector Products

MCQ▾

Question

The three vectors A = 3i - 2j - k, B = i - 3j + 5k and C = 2i - j - 4k does not form

(1) an equilateral triangle

(2) isosceles triangle

(3) a right angled triangle

(4) no triangle

Choices

Choice (4) Response

a.

1 and 2 are correct

b.

2 and 4 are correct

c.

1, 2 and 3 are correct

d.

1 and 3 are correct

Question number: 76

» Kinematics » Scalars and Vectors » Scalar and Vector Products

MCQ▾

Question

A boy walks uniformly along the sides of a rectangular park of size 400 m x 300 m, starting from one corner to the other corner diagonally opposite. Which of the following statements is correct?

(1) He has travelled a distance of 700 m

(2) His displacement is 500 m

(3) His velocity is not uniform throughout the walk

(4) His displacement is 700 m

Choices

Choice (4) Response

a.

1 and 3 are correct

b.

1, 2 and 3 are correct

c.

2 and 4 are correct

d.

1 and 2 are correct

Question number: 77

» Kinematics » Motion in a Straight Line

MCQ▾

Question

A metal sphere is hung by a string fixed to a wall. The sphere is pushed away from the wall by a stick. The forces acting on the sphere are shown in the second diagram. Which of the following statements is wrong?

 metal sphere fixed at wall

Metal Sphere Fixed at Wall

metal sphere fixed at wall

In above fig we shows that metal sphere fixed at the wall, as we apply some force on it then motion is taking place, here angle is Equation .

Choices

Choice (4) Response

a.

Equation + Equation + Equation = 0

b.

T 2 + P 2 + W 2 = 0

c.

T2 = P2 + W2

d.

p = w Equation

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