How Is The Doppler Effect Calculated
The Doppler shift can be calculated using the formula below f = f0 (v + vr)/( v+vs) Here, f is... View Article
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What Is Difference Between Circular And Rotational Motion
In a circular motion, the object just moves in a circle. For example, artificial satellites going around Earth at a... View Article
What Are The Three Types Of Lenses
The lenses are of three types based on the curve of the glass on either side of the lens. Concave... View Article
Is Latent Heat Positive Or Negative
Latent heat of condensation is equal to the latent heat of vapourization with opposite sign. The latent heat of condensation... View Article
How Does The Quantum Theory Explain The Photoelectric Effect
According to quantum theory, light is in the form of packets of energy called the photons. The energy of the... View Article
What Is Momentum Simple Language
Momentum is the product of mass and velocity. Momentum is a vector quantity having both direction and magnitude. According to... View Article
What Kind Of Energy Is Momentum
Momentum is not a form of energy. Though, momentum and kinetic energy are concepts related to the motion of the... View Article
If A Jk And C Ijk Then The Vector B Satisfying A X Bc 0 And Ab 3
a) -i + j – 2k b) 2i – j + 2k c) i – j – 2k d) i... View Article
If A Is Perpendicular To Both B And C Then
1) a.(b x c) = 0 2) a x (b x c) = 0 3) a x (b+c) = 0... View Article
The Vectors Which Isare Coplanar With Vectors Ij2k And I2jk Are Perpendicular To The Vector
1) j-k 2) -i+j 3) i-j 4) -j+k Answer: Both (3) i-j and (4) -j+k Solution: Let a = i+j+2k... View Article
If A B And C Are Unit Vectors Such That A X B X C 1 2 Then Angle Between A And C Is
1) π/6 2) π/4 3) π/2 4) π/3 Answer: (4) π/3 Solution: Given, a x (b x c) = ½b... View Article
If A B And C Are Unit Coplanar Vectors Then 2a B 2bc 2ca Is Equal To
1) 1 2) 0 3) –√3 4) √3 5) 6 Answer: (2) 0 Solution: Given [a b c] = 0... View Article
Let A B And C Be The Distinct Nonnegative Numbers If The Vectors Lie In Plane Then C Is
1) the harmonic mean of a and b 2) equal to zero 3) the arithmetic mean of a and b... View Article
The Value Of Ab Bc Ca Is
1) 0 2) 1 3) 2 4) None of the above Answer: (1) 0 Solution: Since, a−b+b−c+c−a=0 Vectors a−b,b−c and... View Article
If A And B Unit Vectors Such That A B C 1 4 Then Angle Between A And B Is
1) π/3 2) π/4 3) π/6 4) π/2 5) π/12 Answer: (3) π/6 Solution: [a × b, a × b]... View Article
If Aij Bjk Cki If D Is A Unit Vector Such That Ad 0 B C D Then D Is Are Equal To
1) ±(i+j-k)/√3 2) ±(i+j-2k)/√6 3) ±(i+j+k)/√3 4) ±k 5) i+j Answer: (2) ±(i+j-2k)/√6 Solution: Given, [b c d] = 0... View Article
If A Ik B Xij1xk And Cyixj1xyk Then A B C Depends On
1) neither x nor y 2) both x and y 3) only x 4) only y Answer: (1) neither x... View Article
If Ab And C Are Three Noncoplanar Vectors Then Abcab Ac Equals
1) 0 2) [A, B, C] 3) 2[A, B, C] 4) -[A, B, C] Answer: (4) -[A, B, C] Solution:... View Article
If A Is Perpendicular To B And C A 2 B 3 C 4 And The Angle Between B And C Is 2pi3 Then A B C Is Equal To
1) 4√3 2) 6√3 3) 12√3 4) 18√3 Answer: (3) 12√3 Solution: Given, |a|= 2, |b| = 3, |c| =... View Article
The Number Of Distinct Real Values Of For Which The Vectors 2ijk I2jk And Ij2k Are Coplanar Is
1) zero 2) one 3) two 4) three Answer: (3) Two Solution: Given three vectors are coplanar, therefore, \(\begin{array}{l}\left|\begin{array}{ccc} -\lambda^{2}... View Article
