NEET (National Eligibility cum Medical Entrance Test) Physics: Questions 797 - 801 of 2142

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Question number: 797

» Experimental Skills » Screw Gauge

MCQ▾

Question

Four bodies of equal mass start moving with same speed as shown in the figure. In which of the following combination the center of mass will remain at origin?

System of four mass ABCD

System of Four Mass ABCD

In above figure we show the four body of equal mass make square, having same speed

Choices

Choice (4) Response

a.

a and c

b.

a and b

c.

b and d

d.

c and d

Question number: 798

» Electromagnetic Induction & Alternating Currents » Self and Mutual Inductance

MCQ▾

Question

Two inductors L 1 and L 2 are at a sufficient distance apart. Equivalent inductance when they are connected (i) in series (ii) in parallel are

Choices

Choice (4) Response

a.

Equation

b.

None

c.

Equation

d.

Equation

Question number: 799

» Laws of Motion » Force and Inertia

MCQ▾

Question

A force of 100 N acts in the direction as shown in figure on a block of mass 10 kg resting on a smooth horizontal table. The speed acquired by the block after it has moved a distance of 10 m, will be - (in m/sec) (g = 10 m/sec 2)

 Force of 100N acts on the block

Force of 100N Acts on the Block

Speed acquired by the block after it has moved a distance of 10 m

Choices

Choice (4) Response

a.

17 m/sec

b.

1.7 m/sec

c.

13.17 m/sec

d.

1.3 m/sec

Question number: 800

» Work, Energy and Power » Work Done

MCQ▾

Question

The work done in pulling a body of mass 3 kg along an inclined plane (angle 50°) with coefficient of friction 0.2 through 2 m, will be -

Choices

Choice (4) Response

a.

52.56 J

b.

94.08 J

c.

98.08 J

d.

91.08 J

Question number: 801

» Electromagnetic Induction & Alternating Currents » Induced EMF and Current

Assertion-Reason▾

Assertion (Ꭺ)

The induced e. m. f. and current will be same in two identical loops of copper and aluminum, when rotated with same speed in the same magnetic field.

Reason (Ꭱ)

Induced e. m. f. is proportional to rate of change of magnetic field while induced current depends on resistance of wire.

Choices

Choice (4) Response

a.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

b.

Ꭺ is true but Ꭱ is false

c.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

d.

Ꭺ is false but Ꭱ is true

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