NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 703 - 707 of 2184

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Question number: 703

» Electromagnetic Induction & Alternating Currents » Alternating Currents

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MCQ▾

Question

The frequency of ac mains in India is

Choices

Choice (4) Response

a.

60 c/s or Hz

b.

50 c/s or Hz

c.

120 c/s or Hz

d.

30 c/s or Hz

Question number: 704

» Experimental Skills » Screw Gauge

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MCQ▾

Question

The distance between the carbon atom and the oxygen atom in a carbon monoxide molecule is 1.1. Given, mass of carbon atom is 12 a. m. u. and mass of oxygen atom is 16 a. m. u. , calculate the position of the center of mass of the carbon monoxide molecule

Choices

Choice (4) Response

a.

6.3 Å from the carbon atom

b.

0.63 Å from the carbon atom

c.

1 Å from the oxygen atom

d.

0.12 Å from the oxygen atom

Question number: 705

» Experimental Skills » Screw Gauge

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Assertion-Reason▾

Question

Assertion (Ꭺ)

Position of center of mass is independent of the reference frame.

Reason (Ꭱ)

Centre of mass is same for all bodies.

Choices

Choice (4) Response

a.

Ꭺ is true but Ꭱ is false

b.

Both Ꭺ and Ꭱ are false

c.

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

d.

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

Question number: 706

» Electromagnetic Induction & Alternating Currents » AC Generator and Transformer

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MCQ▾

Question

A step up transformer has transformation ratio 5: 3. What is voltage in secondary if voltage in primary is 60 V.

Choices

Choice (4) Response

a.

100 V

b.

60 V

c.

180 V

d.

20 V

Question number: 707

» Kinematics » Uniformly Accelerated Motion

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MCQ▾

Question

A force produces an acceleration of 5 m/s 2 in a body and same force an acceleration of 15 m/s 2 in another body. The acceleration produced by the same force when applied to the combination of two bodies will be –

Choices

Choice (4) Response

a.

20 m/s 2

b.

0.667 m/s 2

c.

10 m/s 2

d.

3.75 m/s 2