हिंदी
तमिलनाडु बोर्ड ऑफ सेकेंडरी एज्युकेशनएचएससी विज्ञान कक्षा १२

The wave associated with a moving particle of mass 3 × 10–6 g has the same wavelength as an electron moving with a velocity 6 × 106 ms–1. The velocity of the particle is

Advertisements
Advertisements

प्रश्न

The wave associated with a moving particle of mass 3 × 10–6 g has the same wavelength as an electron moving with a velocity 6 × 106 ms–1. The velocity of the particle is

विकल्प

  • 1.82 × 10–18 ms–1

  • 9 × 10–2 ms–1

  • 3 × 10–31 ms–1

  • 1.82 × 10–15 ms–1

MCQ
Advertisements

उत्तर

1.82 × 10–15 ms–1

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 8: Dual Nature of Radiation and Matter - Evaluation [पृष्ठ १३५]

APPEARS IN

सामाचीर कलवी Physics - Volume 1 and 2 [English] Class 12 TN Board
अध्याय 8 Dual Nature of Radiation and Matter
Evaluation | Q I. 3. | पृष्ठ १३५

संबंधित प्रश्न

Find the (a) maximum frequency and (b) minimum wavelength of X-rays produced by 30 kV electrons.


Why should gases be insulators at ordinary pressures and start conducting at very low pressures?


How will the thermionic current vary if the filament current is increased?


A diode value is connected to a battery and a load resistance. The filament is heated, so that a constant current is obtained in the circuit. As the cathode continuously emits electrons, does it become more and more positively charged?


The cathode of a diode valve is replaced by another cathode of double the surface area. Keeping the voltage and temperature conditions the same, will the place current decrease, increase or remain the same?


Let i0 be the thermionic current from a metal surface when the absolute temperature of the surface is T0. The temperature is slowly increased and the thermionic current is measured as a function of temperature. Which of the following plots may represent the variation in (i/i0) against (T/T0)?


The anode of a thermionic diode is connected to the negative terminal of a battery and the cathode to its positive terminal.


The constant A in the Richardson−Dushman equation for tungsten is 60 × 104 A m−2K−2. The work function of tungsten is 4.5 eV. A tungsten cathode with a surface area 2.0 × 10−5 m2 is heated by a 24 W electric heater. In steady state, the heat radiated by the heater and the cathode equals the energy input by the heater and the temperature becomes constant. Assuming that the cathode radiates like a blackbody, calculate the saturation current due to thermions. Take Stefan's Constant = 6 × 10−8 W m−2 K−1. Assume that the thermions take only a small fraction of the heat supplied.


If a light of wavelength 330 nm is incident on a metal with work function 3.55 eV, the electrons are emitted. Then the wavelength of the wave associated with the emitted electron is (Take h = 6.6 × 10–34 Js)


The work function of a metal is 2.31 eV. Photoelectric emission occurs when the light of frequency 6.4 × 1014 Hz is incident on the metal surface. Calculate

  1. the energy of the incident radiation,
  2. the maximum kinetic energy of the emitted electron and
  3. the stopping potential of the surface.

Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×