NEET Physics: Questions 1038 - 1042 of 2098

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Question number: 1038

» Electromagnetic Induction & Alternating Currents » Resonance

MCQ▾

Question

The resonant frequency of a circuit is f. If the capacitance is made 4 times the initial values, then the resonance frequency will become

Choices

Choice (4) Response

a.

f2

b.

f

c.

174

d.

Both a. and c. are correct

Question number: 1039

» Electromagnetic Induction & Alternating Currents » Power in AC Circuits

MCQ▾

Question

If a current I given by I0sin(ωtπ2) flows in an ac circuit across which an ac potential of E=E0sinωt has been applied, then the average power consumption P in the circuit will be

Choices

Choice (4) Response

a.

P=E0I02

b.

P=2E0I0

c.

P=0

d.

P=E0I02

Question number: 1040

» Ray Optics » Mirror Formula

MCQ▾

Question

The radius of a glass ball is 5 cm. There is an air bubble at l cm from the center of the ball and refractive index of glass is 1.5. The position of image viewed from surface near the bubble is.

Choices

Choice (4) Response

a.

4.63 cm

b.

5.12 cm

c.

3.63 cm

d.

2.12 cm

Question number: 1041

» Electrostatics » Capacitors

MCQ▾

Question

A parallel plate capacitor with plate area A and separation between the plates d, is charged by a constant current i. Consider a plane surface of area A4 parallel to the plates and drawn symetrically between the plates, What is the displacement current through this area?

Choices

Choice (4) Response

a.

i4

b.

i2

c.

2i

d.

i

Question number: 1042

» Electromagnetic Waves » Electromagnetic Waves & Characteristics

MCQ▾

Question

Unit of expression µ 0ϵ 0 is,

Choices

Choice (4) Response

a.

m/s

b.

s/m

c.

s 2 /m 2

d.

m 2 /s 2

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