NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 732 - 737 of 2320

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Passage

Read the passage given below and answer the questions that follows:

In the figure shown, the rod has a resistance R, the horizontal rails have negligible friction. Magnetic field of intensity B is directed perpendicular into the plane of paper. A cell of e. m. f. E and negligible internal resistance is connected between points a and b. The rod is initially at rest.

Rod of resistance R in magnetic field

Rod of Resistance R in Magnetic Field

Question number: 732 (1 of 3 Based on Passage) Show Passage

» Electromagnetic Induction & Alternating Currents » Induced EMF and Current

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MCQ▾

Question

The current when the rod attains its terminal speed is

Choices

Choice (4)Response

a.

b.

c.

d.

Zero

Question number: 733 (2 of 3 Based on Passage) Show Passage

» Electromagnetic Induction & Alternating Currents » Induced EMF and Current

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MCQ▾

Question

After some time the rod will approach a terminal speed. The speed is,

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 734 (3 of 3 Based on Passage) Show Passage

» Electromagnetic Induction & Alternating Currents » Induced EMF and Current

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MCQ▾

Question

The velocity of the rod as a function of time t (where ) is

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 735

» Kinematics » Uniformly Accelerated Motion

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MCQ▾

Question

A force produces acceleration 1, ½, 1/3, ¼… (All in m/s2), applied separetly to n bodies. If these bodies are combined to form single one, then the acceleration of the system will be, if same force is taken into account.

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 736

» Experimental Skills » Vernier Callipers

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MCQ▾

Question

Two bodies of masses 2 kg and 4 kg are moving with velocities 5 m/s and 8 m/s respectively along same direction. Then the velocity of their center of mass will be

Choices

Choice (4)Response

a.

6.4 m/s

b.

7.3 m/s

c.

5.25 m/s

d.

8.1 m/s

Question number: 737

» Electromagnetic Induction & Alternating Currents » Reactance and Impedance

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MCQ▾

Question

In an L - R circuit, the value of L is henry and the value of R is 30 ohm. If in the circuit, an alternating e. m. f. of 200 volt at 50 cycles per sec is connected, the impedance of the circuit and current will be

Choices

Choice (4)Response

a.

40.4 Ω, 5A

b.

30.7 Ω, 6.5A

c.

50 Ω, 4A

d.

11.4Ω, 17.5A

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