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GS
GS Set-1
Physics
Dual Nature of Radiation
41

Dual Nature of Radiation MCQ with Answers

41) If a beam goes undeflected in Thomson's experiment, then speed of the electron is

5??10⁶?m/s

6??10⁶?m/s

5.5??10⁶?m/s

6.5??10⁶?m/s

Answer is:

5??10⁶?m/s

Explanation:

Use BeV=eE

Dual Nature of Radiation MCQ with Answers

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Related Dual Nature of Radiation MCQ with Answers

42) When an electron enters a magnetic field of 0.01 T with a speed of?10⁷ms^?1?it describes a circle of radius 6 mm there. Then specific charge of the electron is given by

1.87??10¹¹Ckg^?1

1.77??10¹¹Ckg^?1

1.67??10¹¹Ckg^?1

1.57??10¹¹Ckg^?1

Answer is:

1.67??10¹¹Ckg^?1

Explanation:

Use BeV=eE

43) If an electron moving with a speed of 2.5?10⁷ms^?1?is deflected by an electric field of 1.6 k V?m^?1?perpendicular to its circular path, then e/m for the electron will be

1.85??10¹¹Ckg^?1

1.7??10¹¹Ckg^?1

1.8??10¹¹Ckg^?1

1.9??10¹¹Ckg^?1

Answer is:

1.7??10¹¹Ckg^?1

Explanation:

Use BeV=eE

44) If an electron accelerated through a potential difference of 500 volt attains a speed of 1.33??10⁷ms^?1?then specific charge of the electron should be

1.76??10¹¹Ckg^?1

1.66??10¹¹Ckg^?1

1.96??10¹¹Ckg^?1

1.86??10¹¹Ckg^?1

Answer is:

1.76??10¹¹Ckg^?1

Explanation:

Use BeV=eE

45) If an electron accelerated from rest through a potential of 200 V acquires a speed of 84?10¹⁶ms^?1, then its e/m is

1.76??10¹¹Ckg^?1

1.66??10¹¹Ckg^?1

1.96??10¹¹Ckg^?1

1.86??10¹¹Ckg^?1

Answer is:

1.76??10¹¹Ckg^?1

Explanation:

Use BeV=eE

Dual Nature of Radiation MCQ with Answers

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