List of practice Questions

According to Bray’s Nutrient Mobility concept, which among following element is mobile in plants but immobile in soil?
Double fertilization is a characteristic of
Which of the following has maximum coagulating power in the coagulation of positively charged sol?
Describe the physiological effects and applications of ethylene.
What is the Rydberg constant? Write down its unit.
What is an electric dipole? Find an expression for electric potential at any point due to an electric dipole.
What is interference of light? Find an expression for fringe width in Young's double slit experiment.
Mention the defects of human vision and describe the methods to remove them.
Write the properties of diamagnetic, paramagnetic, and ferromagnetic materials.
Define self-inductance and write its S.I. unit. Find the self-inductance for a solenoid of \( N \) turns, length \( l \), and radius \( r \).
Describe with diagram the working method of p-n-p and n-p-n transistors.
What is the critical angle? Write down its necessary conditions.
10$^{19}$ electrons are placed on an uncharged body. Calculate the charge produced on the body.
Mention the difference between p-type and n-type semiconductors.
Write down two uses of a shunt.
What is wattless current?
What is a light-emitting diode (LED)? Write down one application of it.
Convert the binary number \(1101\) into the decimal system.
Explain UNIVAC and Fax.
Explain the difference between nuclear fission and nuclear fusion.
Find the increase in energy of a condenser of capacity \(6\, \text{pF}\) on changing the potential difference from 10 V to 20 V.
What are ohmic and non-ohmic resistances? Write down one example of each.
What is an electromagnetic wave? On which factors does its velocity in vacuum depend?
What is a cyclotron? State its two limitations.
Define two magnetic elements of the Earth.