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The Modern Physics Multiple Choice Questions (MCQ Quiz) with Answers PDF, Modern Physics MCQ PDF e-Book download to practice Applied Physics Tests. Learn Modern Physics Multiple Choice Questions and Answers (MCQs), Modern Physics quiz answers PDF to study online certification courses. The Modern Physics MCQ App Download: Free learning app for modern physics test prep for 2 year online degrees.

The MCQ: When K.Emax of photoelectrons is zero, then frequency of incident photon relative to threshold frequency is; "Modern Physics" App Download (Free) with answers: Less; Equal; Greater; Small; to study online certification courses. Practice Modern Physics Quiz Questions, download Google eBook (Free Sample) for free online classes.

## Modern Physics MCQs: Questions and Answers

MCQ 1:

Rest mass energy of an electron is

1. 1.02 MeV
2. 0.511KeV
3. 0.511 MeV
4. 2.02 MeV
MCQ 2:

When K.Emax of photoelectrons is zero, then the frequency of incident photon relative to threshold frequency is

1. less
2. equal
3. greater
4. small
MCQ 3:

An inertial frame of reference is the frame

1. in which first law of motion is valid
2. in which law of inertia is valid
3. which is not moving with uniform velocity
4. both a and b
MCQ 4:

In photocell caesium, coated oxidized silver cathode emits electrons for

1. visible light
2. ultraviolet
3. infrared light
4. x-rays
MCQ 5:

According to the theory of relative mass of an object is

1. depends on particles
2. speed of light
3. volume of object
4. area of object