Speed interview questions

The period of pendulum depends upon

1. Amplitude
2. Energy
3. Mass
4. Length

Maximum value of the wavelength of ultrasonic waves is

1. 33 cm
2. 20 cm
3. 1.65 m
4. 1.65 cm

Who discovered wireless communication?

1. Marconi
2. Newton
3. Maxwell
4. Hertz

The product of the time period of wave and its frequency is

1. Unity
2. Zero
3. Infinite
4. None of these

Which are the relevant waves in telecommunication?

1. Microwaves
2. Violet-rays
3. X-rays
4. All of them

X-rays are steams of

1. Protons
2. Electrons
3. Photons
4. None of these

Mechanical waves

1. Transverse only
2. Can be both longitudinal and transverse
3. Are longitudinal only
4. None of the above

Out of the following, which frequency is not clearly audible to the human ear?

1. 30 Hz
2. 300 Hz
3. 3000 Hz
4. 30,000 Hz

Which one of the following is not electromagnetic in nature?

1. Infrared rays
2. Gamma-rays
3. X-rays
4. Cathode rays

Who firstly predicated the existence of electromagnetic waves?

1. Maxwell
2. Romar
3. Marconi
4. Hertz

The ozone layer absorbs

1. Ultraviolet rays
2. Radio waves
3. Microwaves
4. Infrared radiation

The Doppler’s effect is applicable for

1. Light wave
2. Sound wave
3. Space wave
4. Both (a) and (b)

SONAR is based on the principle of

1. Reverberation
2. Echo
3. Resonance
4. None of these

Resonance is a special case of

1. Damped vibration
2. Forced vibration
3. Natural vibration
4. None of these

Sounds travels fastest in

1. Vaccum
2. Water
3. Air
4. Steel

The quality of a musical note depends upon

1. Its harmonic content
2. The wave velocity
3. Its frequency
4. Its amplitude

Ultrasonic waves are those waves which

1. Have large amplitude
2. Have high velocity
3. Human beings can hear
4. Human beings cannot hear

Microwaves are electromagnetic waves with frequency, in the range of

1. Hertz
2. Micro hertz
3. Mega hertz
4. Giga hertz

Which of the following electromagnetic radiations has the smallest wavelength?

1. Gamma rays
2. X-rays
3. Ultraviolet
4. Microwaves

Which one of the following does TV remote control unit use to operate a TV set?

1. Radio waves
2. Micro waves
3. Sound waves
4. Light waves

Which of the following is used in oven?

1. Radio waves
2. Microwaves
3. UV-rays
4. X-rays

Echo is produced due to

1. Resonance
2. Refraction of sound
3. Reflection of sound
4. None of the above

The rest mass of a photon is

1. Dependent on velocity
2. Zero
3. Very small
4. Very large

Sound waves in air are ___ waves.

1. Electromagnetic
2. Transverse
3. Radio
4. Longitudinal

Which of the following type of waves is different from others?

1. Sound waves
2. Radio waves
3. X-rays
4. Light waves

Which one of the following has highest frequency?

1. Microwaves
2. Cosmic rays
3. X-rays
4. Radio waves

Red shift is an illustration of

1. Unknown phenomenon
2. Doppler effect
3. Low temperature emission
4. High frequency absorption

Pitch of sound depends on

1. Frequency
2. Amplitude
3. Speed
4. Wavelength

X-rays absorption will be maximum for the sheets of

1. Lead
2. Copper
3. Iron
4. Silver