NEET (National Eligibility cum Medical Entrance Test) Physics: Questions 374 - 377 of 2142

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Question number: 374

» Electrostatics » Capacitors

MCQ▾

Question

A parallel plate capacitor is charged and the charging battery is then disconnected. If the plates of the capacitor are moved further apart by means of insulating handles, then

Choices

Choice (4) Response

a.

The electrostatic energy stored in the capacitor increases

b.

The voltage across the plates decreases

c.

The charge on the capacitor increases

d.

The capacitance increases

Question number: 375

» Kinematics » Uniform and Non-Uniform Motion

MCQ▾

Question

A force of (Equation ) N acted on a body of mass 10 kg. The displacement after 10 sec, if it starts from rest, will be -

Choices

Choice (4) Response

a.

10 m along Equation with x axis

b.

50 m along Equation with x axis

c.

70 m along Equation with x axis

d.

None of the above

Question number: 376

» Laws of Motion » Force and Inertia

MCQ▾

Question

The roadway bridge over a canal is the form of an arc of a circle of radius 10 m. What is the minimum speed with which a car can cross the bridge without leaving contact with the ground at the highest point (g = 9.8 m/s 2)

Choices

Choice (4) Response

a.

7.556 m/s

b.

5.76 m/s

c.

14.654 m/s

d.

9.899 m/s

Question number: 377

» Electrostatics » Electrostatic Potential Energy

MCQ▾

Question

An electric dipole has the magnitude of its charge is q and its dipole moment is p. It is placed in a uniform electric field E. If its dipole moment is perpendicular to the direction of the field, the force on it and its potential energy are respectively

Choices

Choice (4) Response

a.

2q. E and minimum

b.

are zero

c.

q. E and Equation

d.

q. E and Equation

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