speed Interview Questions and Answers
Ques:- The period of pendulum depends upon
A. Amplitude
B. Energy
C. Mass
D. Length
Ques:- Maximum value of the wavelength of ultrasonic waves is
A. 33 cm
B. 20 cm
C. 1.65 m
D. 1.65 cm
Ques:- Ultrasonic waves are those waves which
A. Have large amplitude
B. Have high velocity
C. Human beings can hear
D. Human beings cannot hear
Ques:- Microwaves are electromagnetic waves with frequency, in the range of
A. Hertz
B. Micro hertz
C. Mega hertz
D. Giga hertz
Ques:- Who discovered wireless communication?
A. Marconi
B. Newton
C. Maxwell
D. Hertz
Ques:- Which of the following electromagnetic radiations has the smallest wavelength?
A. Gamma rays
B. X-rays
C. Ultraviolet
D. Microwaves
Ques:- The product of the time period of wave and its frequency is
A. Unity
B. Zero
C. Infinite
D. None of these
Ques:- Which one of the following does TV remote control unit use to operate a TV set?
A. Radio waves
B. Micro waves
C. Sound waves
D. Light waves
Ques:- Which are the relevant waves in telecommunication?
A. Microwaves
B. Violet-rays
C. X-rays
D. All of them
Ques:- X-rays are steams of
A. Protons
B. Electrons
C. Photons
D. None of these
Ques:- Mechanical waves
A. Transverse only
B. Can be both longitudinal and transverse
C. Are longitudinal only
D. None of the above
Ques:- Out of the following, which frequency is not clearly audible to the human ear?
A. 30 Hz
B. 300 Hz
C. 3000 Hz
D. 30,000 Hz
Ques:- Which one of the following is not electromagnetic in nature?
A. Infrared rays
B. Gamma-rays
C. X-rays
D. Cathode rays
Ques:- Who firstly predicated the existence of electromagnetic waves?
A. Maxwell
B. Romar
C. Marconi
D. Hertz
Ques:- The ozone layer absorbs
A. Ultraviolet rays
B. Radio waves
C. Microwaves
D. Infrared radiation
Ques:- The Doppler’s effect is applicable for
A. Light wave
B. Sound wave
C. Space wave
D. Both (a) and (b)
Ques:- SONAR is based on the principle of
A. Reverberation
B. Echo
C. Resonance
D. None of these
Ques:- Resonance is a special case of
A. Damped vibration
B. Forced vibration
C. Natural vibration
D. None of these
Ques:- Sounds travels fastest in
A. Vaccum
B. Water
C. Air
D. Steel
Ques:- The quality of a musical note depends upon
A. Its harmonic content
B. The wave velocity
C. Its frequency
D. Its amplitude
Ques:- Pitch of sound depends on
A. Frequency
B. Amplitude
C. Speed
D. Wavelength
Ques:- X-rays absorption will be maximum for the sheets of
A. Lead
B. Copper
C. Iron
D. Silver
Ques:- Which of the following is used in oven?
A. Radio waves
B. Microwaves
C. UV-rays
D. X-rays
Ques:- Echo is produced due to
A. Resonance
B. Refraction of sound
C. Reflection of sound
D. None of the above
Ques:- The rest mass of a photon is
A. Dependent on velocity
B. Zero
C. Very small
D. Very large
Ques:- Sound waves in air are ___ waves.
A. Electromagnetic
B. Transverse
C. Radio
D. Longitudinal
Ques:- Which of the following type of waves is different from others?
A. Sound waves
B. Radio waves
C. X-rays
D. Light waves
Ques:- Which one of the following has highest frequency?
A. Microwaves
B. Cosmic rays
C. X-rays
D. Radio waves
Ques:- Red shift is an illustration of
A. Unknown phenomenon
B. Doppler effect
C. Low temperature emission
D. High frequency absorption