Longitudinal wave of the following is
A) light wave
B) water wave
C) sound wave
D) none
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If first wave of feminism was focused on Right to vote, the second wave of feminism was focused on
A) Education and health
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12 In a plane electromagnetic wave, the directions of electric field and magnetic field are represented by \( \hat{ k } \) and \( 2 \hat{ i }-2 \hat{ j } \), respectively. What is the unit vector along direction of propagation of the wave? (a) \( \frac{1}{\sqrt{2}}(\hat{ i }+\hat{ j }) \) (b) \( \frac{1}{\sqrt{2}}(\hat{ j }+\hat{ k }) \) (c) \( \frac{1}{\sqrt{5}}(\hat{ i }+2 \hat{ j }) \) (d) \( \frac{1}{\sqrt{5}}(2 \hat{ i }+\hat{ j }) \)
Correct answer is (a) We know that propagation wave vector ∵ \(\vec{E} = \hat{k}\) \(\vec{B} = 2\hat{i} - 2\hat{j}\) \(\vec{C} = \vec{E} \times \vec{B}\) \(\vec{C} = \begin{vmatrix} \hat{i} & \hat{j} & \hat{k} \\ 0 & 0 & 1...
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When a force is applied to the free end of a metal wire, metal wire undergoes (A) longitudinal and lateral extension.
(B) longitudinal extension and lateral contraction.
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A wire has Poisson’s ratio of 0.5. It is stretched by an external force to produce a longitudinal strain of 2 × 10^-3.
Correct option is: (B) 1.998 mm
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Write down the main characteristics of longitudinal waves.
Characteristics of longitudinal waves: 1. All the particles of medium in the path of wave vibrate in a direction parallel to the direction of propagation of wave with same period and...
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In the examples given below, state if the wave motion is transverse, longitudinal or a combination of both?
1. Light waves (from Sun to Earth) are electromagnetic waves which are transverse in nature. 2. Ultrasonic waves in air are basically sound waves of frequency greater than the audible frequencies....
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Longitudinal waves CANNOT be …………
Correct option is: (D) polarised
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Define following terms: i. Longitudinal chromatic aberration ii. Circle of least confusion iii. Transverse chromatic aberration
i. Longitudinal chromatic aberration: Due to different refractive indices and angle of deviations, violet and red colours of a white light converge at different focal points, fV and fR. The distance between fV and fR is...
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If the particles of the medium vibrate along the direction of wave, then the wave is called a …………………..
Correct option is A) longitudinal
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Read the following statements and choose the correct option. (A) Moon is a luminous source of light. (B) A glow worm is a natural source of light.
Correct Answer - B The moon is not a luminous source of light, it simply reflects the light which is incident on it. A glow worm is a natural source of...
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