Question # 1

The largest satellite system is managed by

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116 countries

126 countries

136 countries

140 countries

Two tuning forks of frequencies 240 Hz and 243 Hz are sounded together, the number of beats per second is.

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Zero

2

3

4

If 332 waves pass through a medium in 1 second with speed of 332 ms-1 then wavelength will be

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7 m

332 m

664 m

1 m

The word Fluid means

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To rise

To fall

To flow

To oppose

The moment of inertia is analogue to

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Mass

Weight

Torque

Force

Angular velocity determines, How fast or, How slow a body is

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Accelerating

Vibrating

Rotating

Oscillating

Heat is form of.

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Power

Momentum

Energy

Torque

A Carnot engine has an efficiency of 50% when its sink temperature is at 27 ^oC. The temperature of source.

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273^oC

300 ^oC

327 ^oC

373 ^oC

A diatomic gas molecules has

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Translational energy only

Rotational energy only

Vibrational energy only

All translational, Rotational and vibrational energy

When the projectile reaches the highest point of trajectory, the vertical component of velocity becomes.

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Small

Zero

Maximum

Vi cos

When body acquires terminal velocity them its acceleration 'a' becomes.

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a = 0

a = g

a > 0

a < 0

A collision in which K.E. of the system is not conserved is

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Elastic collision

Inelastic collision

3rd low of motion

None of these

The angle between x-axis, y-axis and z-axis is

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45°

60°

75°

90°

In the absence of external force, the change in momentum is.

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Zero

Constant

Decreasing

Increasing

The energy processes, we use are

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Efficient

Not efficient

Reversible

None of these

The phenomenon of polarization of light reveals that sun light is

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Longitudinal waves

Transverse wave

Electromagnetic waves

Monochromatic wave

the example of mechanical waves is

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Water waves

Infrared waves

Radio waves

Ultraviolet waves

The types of optical fibres are

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Three

Four

Five

Six

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11th Class Part 1 Physics Test Online MCQs With Answers

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