List of top Physics Questions on Dual nature of matter asked in NEET (UG)

A photocell employs photoelectric effect to convert :-

In Thomson mass spectrograph $\vec{E}\perp \vec{B} $ then the velocity of electron beam will be

Which one among the following shows particle nature of light?

By photoelectric effect, Einstein proved

Which of the following statement is correct?

An electron of mass m and charge e is accelerated from rest through a potential difference V in vacuum. Its final velocity will be

When light of wavelength 300 nm (nanometer) falls on a photoelectric emitter, photoelectrons are liberated. For another emitter, however, light of 600 nm wavelength is sufficient for creating photoemission. What is the ratio of the work functions of the two emitters ?

An electron with (rest mass $m_0$) moves with a speed of 0.8 c. Its mass when it moves with this speed is

A radio transmitter operates at a frequency 880 kHz and a power of 10 kW. The number of photons emitted per second is