A 400 pF capacitor is charged by a 200 V supply. It is then disconnected from the supply and is connected to another uncharged 400 pF capacitor. The electrostatic energy lost in the process is

A radioactive source (Phosphorus-32) has an initial activity 10 \(\mu\)Ci, its half life is 14 days. What time elapses before the activity falls to 1.25 \(\mu\)Ci ?

Which of the following statements are correct?
A. The algebraic sum of potential drops around any closed loop is zero.
B. Metals have high resistivity.
C. The potentiometer is a device in which a condition of no current flow applies.
D. Kirchhoff's junction rule is based on conservation of charge.
E. Bending the wire changes the validity of Kirchhoff's junction rule.
Choose the correct answer from the options given below:

A digital signal
A. does not provides a continuous set of values.
B. can utilise binary system
C. represents values as discrete steps
D. can utilise decimal as well as binary system
Choose the correct anser from the options given below:

Equipotential surfaces at a great distance from a collection of charges whose total sum is not zero are approximately:

Seven lead accumulators, each of emf 2 V, and internal resistance \( 0.07 \text{ } \Omega \), are connected in series with an external resistance \( 9.51 \text{ } \Omega \). The current in the circuit is

An ammeter and a Voltmeter are to be connected in a circuit. Which of the following statements are correct?
(A) Ammeter has negligible resistance.
(B) Ammeter is always connected in series in the circuit.
(C) Voltmeter should have negligible resistance.
(D) Voltmeter should be connected in parallel so that the whole current may pass through it.
Choose the correct answer from the options given below:

Which of the following statements are correct ?
(A) Electrostatic field lines form closed loops.
(B) In an electric dipole, the direction from charge to q is the direction of the dipole.
(C) Water molecule is an example of polar molecule.
(D) The electric field due to a uniformly charged thin shell is zero at some points inside the shell.
(E) Electrostatic force is conservative in nature.
Choose the correct answer from the options given below :

The function \(f(x)=6-6 x-2 x^2\)

Which of the following genetic disorder is not a type of Mendelian disorder?

The original value of an asset minus the accumulated depreciation at a given date is known as:

Let \(E\) and \(F\) be two events such that \(P(E)=\frac{1}{3}, P(F)=\frac{1}{4}\) and \(P(E \cap F)=\frac{1}{5}\).
Then the value of \(P(F \mid E)\) is equal to

Read the passage and answer the question : There are thousands of varieties of rice in India alone. The diversity of rice in India is one of the richest in the world. Basmati rice is distinct for its unique aroma and flavour and 27 documented varieties of Basmati are grown in India. There is reference to Basmati in ancient texts, folklore and poetry, as it has been grown for centuries. Several attempts have also been made to patent uses, products and processes based on Indian traditional herbal medicine, e.g. turmeric, neem. There has been growing realisation of the injustice, inadequate compensation and benefit sharing between developed and developing countries. The Indian Parliament has recently cleared a Bill that takes such issues into consideration, including patent terms emergency provisions and research and development initiative.
One of the classical example of biopatent controversy is of -