NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 706 - 710 of 2320

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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

Question number: 708

» Experimental Skills » Screw Gauge

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MCQ▾

Question

A T shaped object, dimensions shown in the figure, a1 lying on a smooth floor. A force ‘F is applied at the poi: P parallel to AB, such that the object has only the translational motion without rotation. Find the location o2 P with respect to C

Object on smooth floor in shape of T

Object on Smooth Floor in Shape of T

Here in above figure we show the object AB on the smooth floor and force f apply.

Choices

Choice (4)Response

a.

b.

c.

I

d.

Question number: 709

» Electromagnetic Induction & Alternating Currents » Self and Mutual Inductance

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MCQ▾

Question

Three inductances are connected as shown below. Assuming no coupling, the resultant inductance will be- (L 1 = 0.75 H, L 2 = L 3 = 0.5 H)

Three inductances connected in circuit

Three Inductances Connected in Circuit

In figure three inductances are connected. L2 and L3 are in parallel and L1 connected in series with them.

Choices

Choice (4)Response

a.

0.25 H

b.

0.75 H

c.

0.01 H

d.

1 H

Question number: 710

» Electromagnetic Induction & Alternating Currents » Induced EMF and Current

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MCQ▾

Question

The current in a coil varies with respect to time t as I = 3t 2 + 2t. If the inductance of coil be 10 mH, the value of induced e. m. f. at t = 2 sec will be,

Choices

Choice (4)Response

a.

0.12 V

b.

0.14 V

c.

0.11 V

d.

0.13 V

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