Books by Author Lovekush Kumar
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Recent Articles
In a series LCR circuit, the inductance L is 10 mH, capacitance C is 1 micro Farad and resistance R is 100 ohm. The frequency at which resonance occurs is? NEET UG2023
The magnetic energy stored in an inductor of inductance 4 micro-H carrying a current of 2 A is? NEET UG2023
The angular acceleration of a body, moving along the circumference of a circle, is DIRECTED along? NEET UG2023
The ratio of frequencies of fundamental harmonic produced by an open pipe to that of closed pipe having the same length is? NEET UG2023
A football player is moving southward and suddenly turns eastward with the same speed to avoid an opponent. The force that acts on the player while turning is? NEET UG2023
The temperature of a gas is –50°C. To what temperature the gas should be heated so that the rms speed is increased by 3 times? NEET UG2023
Note1- increased to 3 times and increased by 3 times are different.
In former case final value is 3 times while in latter case the final value is (3+1=4)times of the initial value.
Note-2 the formula has temperature in kelvin so first convert given value to kelvin.
One of the best method for solving questions involving similar cases.
SIMPLY WRITE EQUATION FOR BOTH CASES THEN DIVIDE TO FIND THE RELATION.
For the below question-
The potential energy of a long spring when stretched by 2 cm is U. If the spring is stretched by 8 cm, potential
energy stored in it will be?
you can approach as per discussed method as seen in attached image:
In hydrogen spectrum, the shortest wavelength in the Balmer series is LAMBDA. The shortest wavelength in the Bracket series is ? NEET UG2023
SIMPLY WRITE EQUATION FOR BOTH CASES THEN DIVIDE TO FIND THE RELATION.
Let a wire be suspended from the ceiling (rigid support) and stretched by a weight W attached at its free end. The longitudinal stress at any point of cross-sectional area A of the wire is? NEET UG2023
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