Recent Articles Related To Physics
Two bodies of mass m and 9m are placed at a distance R. The gravitational potential on the line joining the bodies where the gravitational field equals zero, will be ?NEET UG2023
Find x from first line then put it in second line, answer will be -16Gm/R
Note- net field is zero so E1 -E2 = 0 so E1 = E2 has been taken.
The ratio of radius of gyration of a solid sphere of mass M and radius R about its own axis to the radius of gyration of the thin hollow sphere of same mass and radius about its axis is? NEET UG2023
A vehicle travels half the distance with speed v and the remaining distance with speed 2v. Its average speed is? NEET UG2023
The half life of a radioactive substance is 20 minutes. In how much time, the activity of substance drops to one by 16th of its initial value? NEET UG2023
The amount of energy required to form a soap bubble of radius 2 cm from a soap solution is nearly ? (surface tension of soap solution = 0.03 N m^–1) NEET UG2023
Ans- 3.01 * 10^-4 Joule
A Carnot engine has an efficiency of 50% when its source is at a temperature 327°C. The temperature of the sink is ? NEET UG2023
ANS- T2= 27 degree centigrade or 300K
A bullet is fired from a gun at the speed of 280 m s^–1 in the direction 30° above the horizontal. The maximum height attained by the bullet is ? (g = 9.8 m s^–2) NEET UG2023
Put values in above formula and get the result 1000 meter
Improving performance in numericals : Physics for NEET NTA JEE CUET CBSE
To approach a question either write the formula of desired quantity and then put the values directly or indirectly from given values in question
or
write the main equation of that *topic* so that you can know which quantities can be deduced from the *given* values and *main equation*
For example in questions of photo electric effect you can always *start* the question by writing *main equation* and then putting given values and checking what you can find by putting those values. K.E = E - W ;
energy, E can be replaced by expression in terms of freuency / wavelength
work function, W can be replaced by expression in terms of threshould frequency / threshould wavelength
Maximum kinetic energy K.E. can be replaced by expression in terms of velocity or stopping potential.
Basic understanding like -
to cross a pole, a train need to travel a distance equal to it's length... Because pole is said to be crossed only when the guard's wagon(last wagon) crosses the pole.
I don't fear the man who practiced 1000 punch.
I fear the man who practice one punch 1000 *times* - Bruce Lee
Practice each questions 2-3 times until you become used to or comfortable with the analytical process involved in it.
Best Wishes
