Question
A sine wave is travelling in a medium. The minimum distance between the two particles, always having same speed, is:

  1. $\frac{\lambda}{4}$

  2. $\frac{\lambda}{3}$

  3. $\frac{\lambda}{2}$

  4. $\lambda.$

Answer

  1. $\frac{\lambda}{2}$

 Explanation:

A sme wave has a maxima and a minimum and the particle displacement has phase difference of n radians. The speeds at the maximum point and at the minimum point are same although the direction of motion are different. The difference between the posiuons of maxima and minima Is equal to $\frac{\lambda}{2}.$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

Let  and  be the number of holes and conduction electrons respectively in a semiconductor. Then

(a)  in an intrinsic semiconductor

(b)  in an extrinsic semiconductor

(c)  in an intrinsic semiconductor

(d)  in an intrinsic semiconductor

A heavenly body is receding from earth such that the fractional change in l is 1, then its velocity is

(a) C

(b)  

(c)   

(d)  

A student connects a coil of wire with a sensitive galvanometer as shown in figure. He will observe the deflection in the galvanometer if bar magnet is:
Image

When light travels from one medium into another it suffers:

If instantaneous magnetic flux in a coil is $BA \cos \omega t$, then magnitude of induced emf in the coil is :

The half life of a radioactive element which has only   of its original mass left after a lapse of 60 days is

(a) 12 days

(b) 32 days

(c) 60 days

(d) 64 days

A gas kept in a container of finite conductivity is suddenly compressed. The process:
  1. Must be very nearly adiabatic.
  2. Must be very nearly isothermal.
  3. May be very nearly adiabatic.
  4. May be very nearly isothermal.

A moving coil galvanometer has 150 equal divisions. Its current sensitivity is 10 divisions per milliampere and voltage sensitivity is 2 divisions per millivolt. In order that each division reads 1 volt, the resistance in ohms needed to be connected in series with the coil will be

(a) 99995

(b) 9995

(c)  

(d)  

A metallic solid sphere is placed in a uniform electric field. The lines of force follow the path(s) shown in figure as

(a) 1 

(b) 2

(c) 3  

(d) 4

The forbidden gap in the energy bands of germanium at room temperature is about

(a) 1.1 eV

(b) 0.1 eV

(c) 0.67 eV

(d) 6.7 eV