Which experiment shows that wavelength of light is smaller than that of sound___________________?

Related Mcqs:

1. In a photoelectric effect monochromatic light is incident on a metal surface. If the incident light of twice the intensity but of same wavelength the kinetic energy of the emitted electron_______________?

   A. Becomes double
   B. Remains same
   C. Becomes half
   D. First increases then decrease because of the curvilinear graph

2. When one mirror of a Michelson Interferometer is moved a distance of 0.5 mm we observe 2000 fringes. What will be wavelength of light used ?

   A. 5000 nm
   B. 5000A
   C. 500m
   D. 2000um

3. Gives the definition of metre in terms of wavelength of red cadmium light ___________________?

   A. Newton
   B. Einstein
   C. Michelson
   D. Galileo

4. A transmitting station emits radio waves of wavelength λ at power P. If h is Planck’s constant & c the speed of light what is the rate of emission of photons ?

   A. λ
   B. Speed of sound
   C. Speed of lightB.
   D. h

5. In Young double slit experiment, if white light is used____________________?

   A. alternate dark and bright fringes will be seen
   B. coloured fringes will be seen
   C. no interference fringes will be seen
   D. impossible to predict

6. Wavelength of X-rays falling at glancing angle of 30? on a crystal with atmic spacing 2 x 10-10 for the fist order diffraction is________________?

   A. 4 x 10-10 m
   B. 2 x 10-10 m
   C. 0.02×10-10m
   D. 20×10-10m

7. A photon of wavelength 900nm behaves like a particle of mass______________?

   A. 5.53 x 10-36kg
   B. 0 kg.
   C. 2.46 x 10-36kg
   D. 1.84 x 10-44kg

8. Radiation with wavelength longer than red lights______________?

   A. ultraviolet rays
   B. X-rays
   C. infra red radiation
   D. visible radiation

9. The minimum wavelength of X-rays can further be reduced by _______________?

   A. Reducing the pressure or cooling the target
   B. Increasing the temperature of the filament.
   C. Using a target element of higher atomic number
   D. Increasing the potential difference between the cathode and the target

10. The distance between any two consecutive nodes or antinodes in a stationary wavelength (λ) is _________?

    A. λ
    B. λ/2
    C. λ/4
    D. λ/8

    Submitted by: Rizwan Ayub Saadi