AIIMS Physics: Questions 407 - 411 of 500

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Question number: 407

» Electromagnetic Induction & Alternating Currents » Reactance and Impedance

MCQ▾

Question

The reactance of an inductance of 0.07 H is 35Ω . Than the frequency of a. c is –

Choices

Choice (4) Response

a.

110Hz

b.

130Hz

c.

79.6Hz

d.

95.4Hz

Question number: 408

» Laws of Motion » Law of Conservation of Linear Momentum

MCQ▾

Question

A gun of weight of 15 kg fires a shot of 0.5 g with a velocity 240ms . Velocity of recoil gun is: -

Choices

Choice (4) Response

a.

1.4cms

b.

1.2cms

c.

2.0cms

d.

1.6cms

Question number: 409

» Oscillations and Waves » Displacement as a Function of Time

MCQ▾

Question

A particle executes simple harmonic motion with an angular velocity and maximum acceleration of 2.5rads . and 5ms2 respectively. Amplitude of the oscillation is –

Choices

Choice (4) Response

a.

1.0m

b.

0.9 m

c.

0.8 m

d.

0.5 m

Question number: 410

» Rotational Motion » Rigid Body Rotation Equations of Rotational Motion

MCQ▾

Question

A rope is wound around a hollow cylinder of M=5kg and radius R=50cm . If the rope is pulled with a force F=40N , the angular acceleration of cylinder and the linear acceleration of the rope are respectively –

Choices

Choice (4) Response

a.

25rads2,15ms2

b.

20rads2,10ms2

c.

16rads2,8ms2

d.

30rads2,6ms2

Question number: 411

» Work, Energy and Power » Work-Energy Theorem

MCQ▾

Question

The spring constant of a spring balance is 5×103Nm . It is initially stretched by 5 cm from the unstretched position. Then the work done to stretch it further by another 10 cm is

Choices

Choice (4) Response

a.

30J

b.

40J

c.

90J

d.

60J

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