KCET · Physics · Waves and Sound
Which of the following is incorrect?
- A 'Diffraction' helps us to distinguish between sound wave and light wave
- B If the wave is longitudinal, it must be a mechanical wave
- C If the wave is mechanical, it may or may not be a transverse wave
- D Mechanical waves cannot propagate in vacuum
Answer & Solution
Correct Answer
(B) If the wave is longitudinal, it must be a mechanical wave
Step-by-step Solution
Detailed explanation
No Solution Available
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from Physics
- The ratio of the nuclear radii of elements with mass numbers 216 and 125 isKCET 2008 Easy
- In the following combinations of logic gates, the outputs of \(A, B\) and \(C\) are respectively
KCET 2009 Medium - Identify the incorrect statement.KCET 2021 Medium
- Two capillary tubes \(P\) and \(Q\) are dipped vertically in water. The height of water level in capillary tube \(P\) is \(\frac{2}{3}\) of the height in capillary tube \(Q\). The ratio of their diameter isKCET 2021 Medium
- A stationary point source of sound emits sound uniformly in all directions in a non-absorbing medium. Two points \(P\) and \(Q\) are at a distance of \(4 \mathrm{~m}\) and \(9 \mathrm{~m}\) respectively from the source. The ratio of amplitudes of the waves at \(P\) and \(Q\) isKCET 2009 Hard
- An engine moving towards a wall with a velocity \(50 \mathrm{~ms}^{-1}\) emits a note of \(1.2 \mathrm{kHz}\). Speed of sound in air is \(350 \mathrm{~ms}^{-1}\). The frequency of the note after reflection from the wall as heard by the driver of the engine isKCET 2007 Hard
More PYQs from KCET
- The tangent to a given curve \(y=f(x)\) is perpendicular to the \(x\)-axis, ifKCET 2009 Easy
- Histone proteins and positively charged because they are rich in basic amino acid residuesKCET 2023 Medium
- \(\int \frac{\mathrm{dx}}{\mathrm{x}^2\left(\mathrm{x}^4+1\right)^{3 / 4}}\) equalsKCET 2025 Medium
- Excess of silver nitrate solution is added to \(100 \mathrm{~mL}\) of \(0.01 \mathrm{M}\) pentaaqua chloro chromium (III) chloride solution. The mass of silver chloride obtained in grams is [Atomic mass of silver is 108].KCET 2011 Medium
- A solenoid of length \(50 \mathrm{~cm}\) having 100 turns carries a current of \(2.5 \mathrm{~A}\). The magnetic field at one end of the solenoid isKCET 2022 Easy
- The number of diagonals that can be drawn in an octagon isKCET 2025 Easy