NEET (National Eligibility cum Medical Entrance Test) Physics: Questions 257 - 260 of 2142

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Question number: 257

» Kinematics » Average Speed and Instantaneous Velocity

MCQ▾

Question

A cricket ball of mass 150 g is moving with a velocity of 12m/sec and is hit by a bat so that the ball is turned back with a velocity of 20 m/sec; the force on the ball acts for 0.01 sec, then the average force exerted by the bat on the ball will be

Choices

Choice (4) Response

a.

40 N

b.

48 N

c.

400 N

d.

480 N

Question number: 258

» Electrostatics » Electric Field

MCQ▾

Question

Three infinitely long non-conducting charge sheets are placed as shown in figure. The electric field at point P is

Infinitely long non-conducting charge sheets

Infinitely Long Non-Conducting Charge Sheets

Infinitely long non-conducting charge sheets parellel to the x axis.

Choices

Choice (4) Response

a.

4 σ 0 k

b.

Equation

c.

Equation

d.

Equation

Question number: 259

» Electrostatics » Electric Potential

MCQ▾

Question

Four equal charges Q are placed at the four corners of a square of each side ‘a’ Work done in removing a charge - Q from its center to infinity is

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

0

Question number: 260

» Electrostatics » Electric Field

MCQ▾

Question

Charges q, 2q, 3q and 4q are placed at the corners A, B, C and D of a square as shown in the following figure. The direction of electric field at the center of the square is parallel to side.

Square ABCD having different charges at all corners

Square ABCD Having Different Charges at All Corners

Charges q, 2q, 3q and 4q are placed at the corners A, B, C and D of a square

Choices

Choice (4) Response

a.

CB

b.

AC

c.

BD

d.

AB

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