Science Physics MCQ-164

General Science-Physics MCQ test for UPPSC, SSC, NDA, RBI, CivilsPrelims, UPSC, CDS, DelhiPolice Exams



Ultrasonic waves are those waves which

 
 
 
 

With the rise of temperature, the speed of sound in a gas

 
 
 
 

Transverse waves can propagate

 
 
 
 

Which one of the following is the correct sequence of wavelengths of radiations?

 
 
 
 

SONAR is based on the principle of

 
 
 
 

Polarization in electromagnetic wave is caused by

 
 
 
 

What frequency range of EM waves are used for commercial FM radio?

 
 
 
 

Why is sound heard with more intensity through C02 than through the air?

 
 
 
 

The wavelength of X-rays is of the order of

 
 
 
 

Some common mediums in which_. speed of sound waves is measured are mentioned below.
1. Air
2. Steel
3. Copper
4. Water What is the correct increasing order of the speed of sound?

 
 
 
 

Speed of electromagnetic wave is the same

 
 
 
 

Sound moves with higher velocity if

 
 
 
 

Radar waves are sent towards a moving aero plane and the reflected waves are received. When the aero plane is moving towards the radar, the wavelength of the wave

 
 
 
 

Consider the following statements
1 . Microwave ovens are used for cooking purposes .
2 . Microwaves are used in Radar system for aircraft navigation .
3 . A radar using microwave can help in detecting the seed of tennis ball, cricket ball, automobile while in motion .
Which of the statements given above are correct?

 
 
 
 

The quality of a musical note depends upon

 
 
 
 

Match List I (Electromagnetic Wave) with List II (Discoverer) and select the correct answer using the codes given below
List I List II
A . Infrared waves 1 . Bitter
B . Ultraviolet rays 2 . Newton
C . X-rays 3 . Herschell
D . Visible rays 4 . W .Roentgen
Codes
ABCD

 
 
 
 

A wave undergoes reflection from a rigid boundary. One of its characteristic parameters that changes is

 
 
 
 

X-rays are used for the study of crystal structure because

 
 
 
 

An echo will be heard if the minimum distance between the source of sound and obstacle is

 
 
 
 

Which of the following types of wave is used by computed tomography employed for visualization of the internal structure of human body?

 
 
 
 

Consider the following statements
1. A flute of smaller length produces waves of lower frequency.
2. Sound travels in rocks in the form of longitudinal elastic waves only.
Which of the statement(s) given above is/are correct?

 
 
 
 

Assertion (A) Radio waves bend in a magnetic field.
Reason (R) Radio waves are electromagnetic in nature.
Codes

 
 
 
 

The light wave is

 
 
 
 

The technique used to transmit audio signals in television broadcasts is

 
 
 
 

When a stone is dropped on the surface of still water, the waves produced are