MCQ
For a progressive wave, in the usual notation
- A$V=\lambda T$
- ✓$n =\frac{V}{\lambda}$
- C$T =\lambda V$
- D$\lambda=\frac{1}{n}$
✓
Answer
Correct option: B.
$n =\frac{V}{\lambda}$
$n =\frac{V}{\lambda}$
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
A wheel has circumference C. If it makes f r.p.s., the linear speed of a point on the circumference is
Look at the graphs (A) to (D) carefully and indicate which of these possibly represents One dimensional motion of a particle?
If the escape velocity of a body on Earth is 11.2 km/s, the escape velocity of the body thrown at an angle 45° with the horizontal will be
The terminal voltage of a cell of emf E on short circuiting will be
Three blocks A, B and C of masses 4 kg, 2 kg and 1 kg respectively, are in contact on a frictionless surface, as shown. If a force of 14 N is applied on the 4 kg block, then the contact force between A and B is
The pitch of the whistle of an engine appears to drop to $\left(\frac{5}{6}\right)^{\text {th }}$ of original value when it passes a stationary observer. If the speed of sound in air is $350 m / s$ then the speed of engine is
→Two identical wires of substance ' $P$ ' and ' $Q$ ' are subjected to equal stretching force along the length. If the elongation of ' $Q$ ' is more than that of ' $P$ ', then
→A 2 kg body and a 3 kg body are moving along the x-axis. At a particular instant the 2 kg body has a velocity of $3 ms^{-1}$ and the 3 kg body has the velocity of 2 ms -1. the velocity of the centre of mass of that instant is
→Accuracy of measurement is determined by
Amongst given statements, choose the correct statement.
(I) Kepler derived the laws of planetary motion.
(II) Newton provided the reason behind the laws of planetary motion.
(I) Kepler derived the laws of planetary motion.
(II) Newton provided the reason behind the laws of planetary motion.