Two coherent monochromatic light beams of intensities I and 16 I, respectively, superimpose over each other. The resultant intensity in the constructive interference is

If the temperature of a metallic conductor is increased, then the product of resistivity and conductivity

Two point charges \( q_1 = 10 \times 10^{-8} \text{ C} \) and \( q_2 = -2 \times 10^{-8} \text{ C} \) are separated by a distance of 6 cm. The distance from \( q_1 \) where the electric potential is zero, can be

For a given photosensitive material, the stopping potential \( V_0 \) varies with the frequency of incident radiation as

The component of electromagnetic wave having wavelength range from 1 nm to \(10^{-3}\) nm is:

The repetitive use of which of the following logic gate/s separately can be used to prepare an AND gate ?
(A) OR gate
(B) NOT gate
(C) NOR gate
(D) NAND gate
Choose the correct answer from the options given below :

What type of wavefront will emerge from a (i) distant light source and (ii) point source?

Milk sugar, a disaccharide, is composed of

If \(x=-1\) and \(x=-2\) are the extreme points of \(f(x)=\alpha \log |x|+\beta x^2+x\) then

Read the paragraph given below and answer the question.
Sutton and Boveri argued that the pairing and separation of a pair of chromosomes would lead to the segregation of a pair of factors they carried. Sutton united the knowledge of chromosomal segregation with Mendelian principles and called it the chromosomal theory of inheritance. Following this synthesis of ideas, experimental verification of the chromosomal theory of inheritance by Thomas Hunt Morgan and his colleagues, led to discovering the basis for the variation that sexual reproduction produced. Morgan worked with the tiny fruit files, which were found very suitable for such studies. They could be grown on simple synthetic medium in the laboratory. They complete their life cycle in a short span of time and a single mating could produce a large number of progeny flies. Also, there was a clear differentiation of the sexes the male and female flies are easily distinguishable. Also, it has many types of hereditary variations that can be seen with low power microscopes.
Which of the following scientist worked with Drosophila?

Identify the carbohydrate which is not a polysaccharide

If \(\cos ^{-1} \sqrt{3} x+\cos ^{-1} x=\frac{\pi}{2}\), then the value of \(x\) is :

Mammals are able to survive in Antarctica or in the Sahara desert as they are