MCQ

When a wave travels from one medium to another, the quantity which will not change is its:

  • A
    Amplitude
  • B
    Velocity
  • C
    Frequency
  • D
    Intensity

Answer

  1. Frequency

Explanation:

When a wave travels from one medium to another, the amplitude, wavelength, velocity and intensity change but frequency does not change.

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

de-Broglie wavelength ($ \lambda $) of different particles having same kinetic energy depends on their mass as :
Which of the following quantities do not change when a resistor connected to a battery is heated due to the current?
 Dielectrics are _____________?

In a compound microscope, if the objective produces an image Iand the eye piece produces an image Ie, then

(a) Io is virtual but Ie is real  

(b) Io is real but Ie is virtual 

(c) Io and Ie are both real  

(d) Io and Ie are both virtual 

The concepts of holes is introduced based on:

The masses of neutron and proton are 1.0087 a.m.u. and 1.0073  a.m.u. respectively. If the neutrons and protons combine to form a helium nucleus (alpha particles) of mass 4.0015 a.m.u. The binding energy of the helium nucleus will be (1 a.m.u.= 931 MeV)

(a) 28.4  MeV

(b) 20.8  MeV

(c) 27.3  MeV

(d) 14.2  MeV

The wiring of a house has resistance 6 A 100 W bulb is glowing. If a geyser of 1000 W is switched on, the change in potential drop across the bulb is nearly

(a) Nil

(b) 23 V

(c) 32 V   

(d) 12 V

A straight conductor carries a current of 5A. An electron travelling with a speed of 5  parallel to the wire at a distance of 0.1m from the conductor, experiences a force of

(a) 8  

(b) 3.2

(c) 8  

(d) 1.6  

The equation E = pc is valid:
  1. For an electron as well as for a photon.
  2. For an electron but not for a photon.
  3. For a photon but not for an electron.
  4. Neither for an electron nor for a photon.

The current flowing in two coaxial coils in the same direction. On increasing the distance between the two, the electric current will

(a)  Increase

(b)  Decrease

(c)  Remain unchanged

(d)  The information is incomplete