Physics-
General
Easy
Question
The equation of a wave travelling in a string can be written as y = 3 cos 
(100 t - x) Its wavelength is
- 100 cm
- 2 cm
- 5 cm
- None of the above
The correct answer is: 2 cm
Related Questions to study
Physics-
The equation of a wave is y= 2 sin (0.5x - 200t), where x and y are expressed in cm and t in sec The wave velocity is
The equation of a wave is y= 2 sin (0.5x - 200t), where x and y are expressed in cm and t in sec The wave velocity is
Physics-General
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Transverse waves can propagate in
Transverse waves can propagate in
Physics-General
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A man standing on a cliff claps his hand hears its echo after 1 sec If sound is reflected from another mountain and velocity of sound in air is 340 m/sec Then the distance between the man and reflection point is
A man standing on a cliff claps his hand hears its echo after 1 sec If sound is reflected from another mountain and velocity of sound in air is 340 m/sec Then the distance between the man and reflection point is
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physics-
Sound waves have the following frequencies that are audible to human beings
Sound waves have the following frequencies that are audible to human beings
physics-General
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Assertion : If dot product and cross product of 
are zero, it implies that one of the vector must be a null vector
Reason : Null vector is a vector with zero magnitude
Assertion : If dot product and cross product of are zero, it implies that one of the vector must be a null vector
Reason : Null vector is a vector with zero magnitude
physics-General
physics-
Assertion : Vector addition of two vectors is commutative
Reason : 
Assertion : Vector addition of two vectors is commutative
Reason :
physics-General
physics-
The vectors are such that 
.The angle between vectors 
The vectors are such that .The angle between vectors
physics-General
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If 
then angle between 
If then angle between
physics-General
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Which of the following is a scalar quantity:
Which of the following is a scalar quantity:
physics-General
physics-
Angular momentum is:
Angular momentum is:
physics-General
physics-
Figure shows ABCDEF as a regular hexagon What is the value of 
Figure shows ABCDEF as a regular hexagon What is the value of
physics-General
physics-
Find the resultant of three vectors 
shown in the following figure Radius of the circle is R
Find the resultant of three vectors shown in the following figure Radius of the circle is R
physics-General
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As shown in figure the tension in the horizontal cord is 30N The weight W and tension in the string OA in Newton are:
As shown in figure the tension in the horizontal cord is 30N The weight W and tension in the string OA in Newton are:
physics-General
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P, Q and R are three coplanar forces acing at a point and are in equilibrium Given P = 1.9318 kg wt, sin 
= 0.9659, the value of R is (in kg wt)
P, Q and R are three coplanar forces acing at a point and are in equilibrium Given P = 1.9318 kg wt, sin = 0.9659, the value of R is (in kg wt)
physics-General
physics-
If the resultant of the two forces has a magnitude smaller than the magnitude of larger force, the two forces must be:
If the resultant of the two forces has a magnitude smaller than the magnitude of larger force, the two forces must be:
physics-General
