JEE PHYSICS UNIT 17
QUIZ NO 1
TOTAL QUESTIONS = 20
1. The de Broglie wavelength of a particle is inversely proportional to its
A. momentum
B. velocity
C. mass
D. energy
2. The work function of a metal is 2 eV. What is the threshold frequency for the photoelectric emission?
A. 4.8 x 10^14 Hz
B. 2.4 x 10^14 Hz
C. 1.2 x 10^14 Hz
D. 9.6 x 10^14 Hz
3. The stopping potential in a photoelectric experiment depends on
A. frequency of the incident light
B. intensity of the incident light
C. both frequency and intensity
D. angle of incidence
4. In an experiment, the wavelength of incident light is halved. The stopping potential will
A. become half
B. become double
C. remain unchanged
D. increase four times
5. Which of the following has the maximum de Broglie wavelength?
A. alpha particle
B. beta particle
C. proton
D. neutron
6. The photoelectric effect demonstrates the
A. wave nature of light
B. particle nature of light
C. dual nature of light
D. none of these
7. The momentum of a photon is given by
A. h/λ
B. hν
C. hc/λ
D. h/ν
8. The kinetic energy of an emitted electron in the photoelectric effect depends on
A. frequency of the incident light
B. intensity of the incident light
C. angle of incidence
D. wavelength of the light
9. The energy of a photon is proportional to
A. wavelength
B. frequency
C. velocity
D. amplitude
10. When X-rays strike a metal surface, electrons are emitted. This phenomenon is called
A. photoelectric effect
B. thermionic emission
C. Compton effect
D. pair production
11. The threshold wavelength for a metal is 600 nm. The work function of the metal is
A. 2.07 eV
B. 3.1 eV
C. 4.13 eV
D. 5.0 eV
12. The mass of a photon is
A. zero
B. infinite
C. depends on wavelength
D. depends on velocity
13. Which of the following phenomena cannot be explained by the wave theory of light?
A. diffraction
B. polarization
C. photoelectric effect
D. interference
14. The de Broglie wavelength associated with an electron accelerated through a potential difference of V volts is
A. 12.27/√V Å
B. 6.63/√V Å
C. 1.23/√V Å
D. 0.1/√V Å
15. The unit of the Planck's constant is
A. Js
B. J/m
C. J/m²
D. J/m³
16. If the intensity of incident light in a photoelectric experiment is doubled, the kinetic energy of the emitted electrons
A. becomes half
B. becomes double
C. remains unchanged
D. increases four times
17. Which of the following proves the particle nature of radiation?
A. Interference
B. Diffraction
C. Photoelectric effect
D. Polarization
18. The photoelectric current is proportional to
A. frequency of the incident light
B. intensity of the incident light
C. work function of the metal
D. threshold frequency
19. The velocity of an electron in the first orbit of hydrogen atom is approximately
A. 2.18 x 10^6 m/s
B. 3.0 x 10^8 m/s
C. 1.6 x 10^7 m/s
D. 1.0 x 10^6 m/s
20. The rest mass of a photon is
A. 0 kg
B. 1 kg
C. 9.1 x 10^-31 kg
D. depends on wavelength
Submit Quiz
Disclaimer for MCQ Quiz
The questions in this MCQ quiz are intended solely for educational purposes. While we strive to ensure the accuracy of the content, the information provided may not always be up-to-date or complete. The quiz creators are not liable for any misunderstandings, errors, or any consequences arising from the use of this quiz. Participants should verify any information independently before relying on it for any critical decision-making.
इस MCQ क्विज़ के प्रश्न केवल शैक्षिक उद्देश्यों के लिए हैं। हम सामग्री की सटीकता सुनिश्चित करने का प्रयास करते हैं, फिर भी यहां दी गई जानकारी हमेशा अद्यतित या पूर्ण नहीं हो सकती। क्विज़ के निर्माता किसी भी गलतफहमी, त्रुटि या इस क्विज़ के उपयोग से उत्पन्न होने वाले किसी भी परिणाम के लिए उत्तरदायी नहीं हैं। प्रतिभागियों को किसी भी महत्वपूर्ण निर्णय के लिए इस जानकारी पर निर्भर होने से पहले स्वतंत्र रूप से इसकी पुष्टि करनी चाहिए। https://www.pyqonline.com यदि कोई गलती है या कोई सुझाव है तो e-mail करें
[email protected]