List of practice Questions

The time period of SHM is \( 2 \, \mathrm{s} \) with mass \( m \). If an additional mass of \( 40 \, \mathrm{g} \) is added, the time period increases by \( 3 \, \mathrm{s} \). What is \( m \) (in grams)?
Three charges \( +q \) are placed at the corners of an equilateral triangle of side \( a \). What would be the total electrostatic potential energy (in terms of \( k \))?
\( I_g = 8\% \times I \). What is \( S \) (shunt) connected in terms of \( G \)?
The fundamental frequency of a closed organ pipe of length \( 20 \, \mathrm{cm} \) is equal to the second overtone of an organ pipe open at both ends. What is the length of the organ pipe open at both ends?
The speed of a wave is \( 30 \, \mathrm{m/s} \). If the distance between 11 crests is \( 1 \, \mathrm{m} \), what is the frequency (in Hz)?
A star 'A' has radiant power equal to 3 times that of the Sun. The temperature of star 'A' is \( 6000 \, \mathrm{K} \) and that of the Sun is \( 2000 \, \mathrm{K} \). What is the ratio of their radii?
The potential energy of a particle performing linear S.H.M is \( 0.1 \pi^2 x^2 \) joules. If the mass of the particle is \( 20 \, \mathrm{g} \), find the frequency of S.H.M:
Boron has two isotopes with atomic masses 10 and 11. If its average atomic mass is 10.81, the abundance of the lighter isotope is:
Arrange the affinity of hemoglobin (Hb) towards \( \mathrm{CO} \), \( \mathrm{CO_2} \), and \( \mathrm{O_2} \) in increasing order.
A cylinder of fixed capacity \( 67.2 \, \mathrm{L} \) contains helium gas at STP. The amount of heat needed to raise the temperature of the gas in the cylinder by \( 20^\circ \mathrm{C} \) is:
A vessel completely filled with water has holes A and B at depths \( h \) and \( 3h \) from the top, respectively. Hole A is a square of side \( L \), and B is a circle of radius \( r \). The water flowing out per second from both the holes is the same. Then \( L \) is equal to:
Inorganic phosphate is involved in which step of respiration?
From where does the female gametophyte not develop?
Which of the following reverses the apical dominance?
The last electron acceptor in ETS (Electron Transport System) is:
Arrange the following menstrual phases in order:
Which hormones stimulate the production of pancreatic juice and bicarbonate?
Arrange the meninges in order from outer to inner:
Phenylketonuria is caused by:
What is an example of a thermoplastic?
In an acidic buffer, if the ratio of base to acid concentration is increased by 100 times, then find the increase in pH of the buffer solution.
Which disease is characterized by symptoms such as dehydration, excessive loss of water in urine, and absence of glucose in the urine?
Approximately how long is the DNA molecule in a single human cell if stretched out?
Which of the following processes is NOT part of cellular respiration?
The enzyme bromelain, found in pineapples, is primarily used for: