Question # 1

The frequency of waves produced in microwave oven is

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1435 Hz

2450 MHz

1860 MHz

2850 Hz

An oscillating mass-spring system produces

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Sound waves

Electromagnetic waves

Light waves

Periodic waves

when a ball is throng straight up, the acceleration at its highest point is.

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Upward

Down ward

Zero

Horizontal

When two waves having same frequency traveling in same direction combine, phenomenon is called

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Wave motion

Combination of waves

Interference

Diffraction

Angular acceleration is produced by

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Power

Torque

Pressure

Force

A body of mass 2 kg moving with velocity of 4 ms-1 has K.E. equal to.

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16 J

8 J

32 J

2 J

If the slope of a velocity time graph gradually decreases than body is said to be moving with

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Positive acceleration

Negative acceleration

Uniform velocity

None

The wavelength of wave produced by microwave oven is.

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12 cm

12 m

18 m

18 cm

Speed of sound in copper is

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38000 ms-1

3600 ms-1

3500 ms-1

3400 ms-1

Transformation of heat other forms of energy is discussed in

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Thermal physics

Thermodynamics

Atomic physics

Nuclear physics

Which one of the following force cannot do any work on the particle on which it acts.

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Fractional force

Gravitational force

Electrostatic force

Centripetal force

The shortest distance between two points is called

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Distance

Amplitude

Displacement

Is a number

The direction of null vector can be

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(+) ve

(-) ve

Arbitrary

Zero

Entropy of measure of.

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Internal energy of system

Order of system

Disorder of system

Potential energy of system

If a stretched string 4 m long and it has 4 loops of stationary waves, then the wave length is.

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1m

2 m

3 m

4 m

The ability of reveal the minor details of an object under examination is called.

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Resolving power

Magnification

Scattering

Reflection

The weight of an object an elevator moving down with an acceleration of 9.8 m/s2 will becomes

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Half

Double

Unchanged

Zero

A man of 1 kg is freefalling. The force of gravity is

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1 N

9.8 N

0.5 N

Zero

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11th Class Part 1 Physics Test Online MCQs With Answers

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