List of practice Questions

Two charges \( q_1 = 2 \, \mu \mathrm{C} \) and \( q_2 = -3 \, \mu \mathrm{C} \) are placed 10 cm apart in a vacuum. What is the magnitude and direction of the force between them?
In a meter bridge experiment, a resistance of \( 10 \, \Omega \) is balanced by a resistance \( X \) with a balance point at \( 40 \, \mathrm{cm} \). What is the value of \( X \)?
What is the expression for the time period of a satellite orbiting Earth at a height \( h \) above the Earth's surface?
What is the output of a NAND gate when both inputs are HIGH?
The coefficient of performance of a refrigerator is 5. If the temperature inside the freezer is \( -20^\circ \mathrm{C} \), what is the temperature of the surroundings to which it rejects heat?
A metallic sphere of radius \( R \) is charged to a potential \( V \). The magnitude of the electric field at a distance \( r \, (r > R) \) from the center of the sphere is:
Which of the following statements correctly differentiates reproduction in higher plants from lower plants?
Aldose: What type of monosaccharides are fructose, glucose, and xylose? To which family do they belong based on their functional groups?
Which of the following is true about the pulmonary artery in the human circulatory system?
What is the correct sequence of ecological succession in a terrestrial ecosystem?
What conclusion was derived from the Hershey-Chase experiment involving bacteriophages?
Which of the following conclusions was drawn from the Avery-MacLeod-McCarty experiment related to bacterial DNA?
Which hormone is responsible for regulating the basal metabolic rate (BMR) in the human body?
Which of the following ligands has two donor atoms?
What is the chemical formula of glycerol?
Which of the following has the lowest boiling point?
Which element has the highest oxidizing potential?
Alkyl halide and aryl halide react in the presence of sodium metal and dry ether. The name of the reaction is?
Which of the following does not obey the octet rule?
Which one of the following is vinyl alcohol?
What is the polymer of elastomer?
What is the working principle of a cyclotron?
Which of the following correctly represents the AND logic gate?
Find the ratio of K.E. and P.E. when a particle performs SHM and is at \( \frac{1}{n} \) times its amplitude from the mean position.
A pendulum having a negatively charged metal knob is oscillating on a positively charged surface. The time of the pendulum will be: