NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 802 - 807 of 2320

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Question number: 802

» Electromagnetic Induction & Alternating Currents » AC Generator and Transformer

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MCQ▾

Question

A current of 5A is flowing at 220 V in the primary coil of a transformer. If the voltage produced in the secondary coil is 2200V and 50 % of power is lost, then the current in the secondary coil will be -

Choices

Choice (4)Response

a.

5A

b.

0.025A

c.

2.5A

d.

0.25A

Question number: 803

» Laws of Motion » Force and Inertia

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MCQ▾

Question

What is the tension in a rod of length L and mass M at a distance y from F, when the rod is acted on by two unequal forces F1 and F2 (

Tension in a rod of length L and mass M

Tension in a Rod of Length L and Mass M

Rod is acted on by two unequal forces F1 and F2

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 804

» Electromagnetic Induction & Alternating Currents » Peak and RMS Value of AC

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MCQ▾

Question

An alternating current is given by the equation . The r. m. s. current is given by

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 805

» Electromagnetic Induction & Alternating Currents » Induced EMF and Current

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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.

1 V

b.

4V

c.

3 V

d.

2 V

Question number: 806

» Electromagnetic Induction & Alternating Currents » Reactance and Impedance

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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.

350 V

b.

300 V

c.

500 V

d.

250 V

Question number: 807

» Experimental Skills » Screw Gauge

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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.

The handle piece will have larger mass

b.

The bottom piece will have larger mass

c.

Mass of handle piece is double the mass of bottom piece

d.

The two pieces will have the same mass

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