wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

The kinetic energy of an electron is 4.55×1025 J. The mass ofelectron is 9.1×1031kg. Calculate velocity of the electron.


A

10 ms1

No worries! We‘ve got your back. Try BYJU‘S free classes today!
B

102 ms1

No worries! We‘ve got your back. Try BYJU‘S free classes today!
C

103 ms1

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
D

104 ms1

No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is C

103 ms1


Calculation of the velocity of energy:
Kinetic energy =12mv2=4.55×1025 J

=4.55×1025k gm2s2

Or v2=2×KEm=2×(4.55×1025kg m2S2)(9.1×1031kg)

=106m2s2

Or velocity (v)=(106m2s2)12=103ms1


flag
Suggest Corrections
thumbs-up
1
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
CHEMISTRY
Watch in App
Join BYJU'S Learning Program
CrossIcon