NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 2075 - 2078 of 2142

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Question number: 2075

» Magnetic Effects of Current and Magnetism » Electric Charge Moving in Magnetic Field

Appeared in Year: 2016

MCQ▾

Question

An electron is moving in a circular path under the influence of a transvers magnetic field of If the value of is , the frequency of revolution of the electron is:

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 2076

» Wave Optics » Young's Double Slit Experiment

Appeared in Year: 2016

MCQ▾

Question

A linear aperture whose width is is placed immediately in front of a lens of focal length . The aperture is illuminated normally by a parallel beam of wavelength . The distance of the first dark band of the diffraction pattern from the centre of the screen is –

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 2077

» Dual Nature of Matter and Radiation » Particle Nature of Light

Appeared in Year: 2016

MCQ▾

Question

Photons with energy are incident on a cathode C in a photoelectric cell. The maximum energy of emitted photoelectrons is . When photons of energy are incident on C, no photoelectrons will reach the anode A, if the stopping potential of A relative to C is:

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 2078

» Atoms and Nuclei » Hydrogen Spectrum

Appeared in Year: 2016

MCQ▾

Question

If an electron in a hydrogen atom jumps from the 3rd orbit to the 2nd orbit, it emits a photon of wavelength . When it jumps from the 4th orbit to the 3rd orbit, the corresponding wavelength of the photon will be –

Choices

Choice (4) Response

a.

b.

c.

d.

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