NEET Physics: Questions 419 - 423 of 2099

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Question number: 419

» Kinematics » Uniform and Non-Uniform Motion

MCQ▾

Question

A fire man has to carry an injured person of mass 30 kg from the top of a building with the help of the rope which can withstand a load of 150 kg. The acceleration of the

Fireman if his mass is 50 kg, will be

Choices

Choice (4) Response
a.

17.97 m/s 2

b.

9.8 m/s 2

c.

8.575 m/s 2

d.

2.63 m/s 2

Question number: 420

» Electrostatics » Forces Between Two Point Charges

Assertion-Reason▾

Assertion (Ꭺ)

Direction of electric field at a point signifies direction of force experienced by a point charge placed at that point.

Reason (Ꭱ)

Electric field is a vector quantity.

Choices

Choice (4) Response
a. Ꭺ is false but Ꭱ is true
b. Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ
c. Both Ꭺ and Ꭱ are false
d. Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

Question number: 421

» Laws of Motion » Force and Inertia

MCQ▾

Question

A body of mass m tied at the end of a string of length i is projected with velocity 4lg , at what height will it leave the circular path –

Choices

Choice (4) Response
a.

23l

b.

53l

c.

35l

d.

13l

Question number: 422

» Electrostatics » Equipotential Surfaces

MCQ▾

Question

A uniform electric field pointing in positive x - direction exists in a region. Let A be the origin, B be the point on the x - axis at x =+1 cm and C be the point on the y - axis at y =+1 cm. Then the potentials at the points A, B and C satisfy

Choices

Choice (4) Response
a.

V A < V B

b.

V A > V C

c.

V A < V C

d.

V A > V B

Question number: 423

» Properties of Solids & Liquids » Specific Heat Capacity

MCQ▾

Question

The specific heat of a solid is determined by the method known as?

Choices

Choice (4) Response
a.

The method of mixture

b.

The method of fusion

c.

The method of vaporization

d.

The method of cooling

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