4 मार्च विज्ञान का पेपर | Complete Science Revision in One Video - Ch 1 to 13 | 10th UP Board 2025

Class 10 Complete Science UP Board 2024 Exam Full Revision and Syllabus | Target 95+

A hydrogen atom (mass = 1.66 xx 10^(-27) kg "ionzation potential" = 13.6eV) , moving width a velocity 6.24 xx 10^(4) m s^(-1) makes a completely inelastic head-on collision with another stationary hydrogen atom. Both atoms are in the ground state before collision . Up to what state either one atom may be excited?

CBSE Class 10 Science | Important Processes - Biology | Complete Revision - CBSE Board 2020

Assertion : In a movie, ordinarily 24 frames are projected per second from one end to the other of the complete film. Reason : The image formed on retina of eye is sustained up to 1//10s after the removal of stimulus.

A job can be completed by 2 men, 3 women and 4 children in 15 days. The same work, can be completed by 9 women and 6 children in 10 days. If 1 man and 1 woman can complete it in 48 days . Find the time in which one man can complete it. ( in days)

Class 10 Board 2024 | Complete Grammar in 1 Video ?| All Concepts Explanation | All Imp. Questions