Electromagnetism
Current Electricity
MCQ (Single Correct Answer)
Moving Charges and Magnetism
MCQ (Single Correct Answer)
Magnetism and Matter
MCQ (Single Correct Answer)
Electromagnetic Induction
MCQ (Single Correct Answer)
Alternating Current
MCQ (Single Correct Answer)
Electromagnetic Waves
MCQ (Single Correct Answer)
Modern Physics
Dual Nature of Radiation
MCQ (Single Correct Answer)
Semiconductor Devices and Logic Gates
MCQ (Single Correct Answer)
Communication Systems
MCQ (Single Correct Answer)
1
VITEEE 2022
MCQ (Single Correct Answer)
+1
-0

In which of the following photoelectric effect is not observed?

A
Potassium
B
Rubidium
C
Magnesium
D
Cesium
2
VITEEE 2022
MCQ (Single Correct Answer)
+1
-0

Light of wavelength $$\lambda$$ strikes a photoelectric surface and electrons are ejected with kinetic energy $$K$$. If $$K$$ is to be increased to exactly twice its original value, the wavelength must be changed to $$\lambda^{\prime}$$, such that

A
$$\lambda^{\prime}<\lambda / 2$$
B
$$\lambda^{\prime}>\lambda / 2$$
C
$$\lambda>\lambda^{\prime}>\frac{\lambda}{2}$$
D
$$\lambda^{\prime}=\frac{\lambda}{2}$$
3
VITEEE 2021
MCQ (Single Correct Answer)
+1
-0

Einstein's photoelectric equation is

A
$$E_{\max }=h v-\phi$$
B
$$E=m c^2$$
C
$$E^2=p^2 c^2+m_0^2 c^4$$
D
$$E=\left(\frac{1}{2}\right) m v^2$$
Questions Asked from MCQ (Single Correct Answer)
VITEEE Subjects
Aptitude
English