AIIMS Physics: Questions 405 - 410 of 500

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Question number: 405

» Rotational Motion » Radius of Gyration

MCQ▾

Question

The angular velocity of a body changes from Equation to Equation without applying torque but by changing moment of inertia. The ratio of initial radius of gyration to the final radius of gyration is –

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

2

Question number: 406

» Gravitation » Gravitational Acceleration

MCQ▾

Question

It the radius of the earth is reduced by 2 %, keeping the mass unchanged, what will be the change in acceleration due to gravity at the surface of the earth?

Choices

Choice (4) Response

a.

6

b.

4

c.

2

d.

8

Question number: 407

» Electromagnetic Induction & Alternating Currents » Reactance and Impedance

MCQ▾

Question

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

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

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 Equation . Velocity of recoil gun is: -

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

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 Equation . and Equation 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 Equation and radius Equation . If the rope is pulled with a force Equation , the angular acceleration of cylinder and the linear acceleration of the rope are respectively –

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

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