NEET Physics: Questions 804 - 808 of 2099

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Question number: 804

» Electromagnetic Induction & Alternating Currents » Induced EMF and Current

MCQ▾

Question

A current increases uniformly from zero to one ampere in 0.01 second, in a coil of inductance 10 mH. The induced e. m. f. will be –

Choices

Choice (4) Response
a.

3 V

b.

4V

c.

1 V

d.

2 V

Question number: 805

» Electromagnetic Induction & Alternating Currents » Reactance and Impedance

MCQ▾

Question

An alternating voltage is connected in series with a resistance R and an inductance L. If the potential drop across the resistance is 200 V and across the inductance is 150 V, then the applied voltage is

Choices

Choice (4) Response
a.

500 V

b.

350 V

c.

250 V

d.

300 V

Question number: 806

» Experimental Skills » Screw Gauge

MCQ▾

Question

A cricket bat is cut at the location of its center of mass as shown in the fig. Then

Cricket bat – Finding center of mass for this figure

Cricket Bat – Finding Center of Mass for This Figure

In above figure we show the cricket bat, which cut at its center of mass

Choices

Choice (4) Response
a.

Mass of handle piece is double the mass of bottom piece

b.

The handle piece will have larger mass

c.

The two pieces will have the same mass

d.

The bottom piece will have larger mass

Question number: 807

» Experimental Skills » Screw Gauge

MCQ▾

Question

Two particles of masses m l and m 2 initially at rest start moving towards each other under their mutual force m attraction. The speed of the center of mass at any time u when they are at a distance r apart, is

Choices

Choice (4) Response
a.

(Gm1m2r2.1m1+m2)t

b.

(Gm1m2r2.1m2)t

c.

zero

d.

(Gm1m2r2.1m1)t

Question number: 808

» Laws of Motion » Force and Inertia

MCQ▾

Question

A rope of length 15 m and linear density 2 kg/m is lying length wise on a horizontal smooth table. It is pulled by a force of 25 N. The tension in the rope at the point 7 m away from the point of application, will be –

Choices

Choice (4) Response
a.

13.33 N

b.

36.67 N

c.

11.67 N

d. All of the above

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