Two nuclei have mass numbers in the ratio \(3:5\). The ratio of their nucleus densities would be :

For a photoelectric effect:
(A) the photoelectric current is directly proportional to the intensity of the incident radiation.
(B) the maximum kinetic energy of the emitted photoelectrons increases linearly with the frequency of the incident radiation.
(C) for a given frequency of the incident radiation, the stopping potential increases linearly with the intensity of the incident radiation.
(D) the photoelectric emission is an instantaneous process without any apparent time lag.
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The electrostatic potential at a point on the surface of a charged spherical conducting shell of radius 10 cm is 120 V. The electric potential at a distance of 5 cm from the centre of the shell is:

In free space, all components of the complete electromagnetic spectrum have the same

Two galvanometers have identical characteristics. One of them is converted into a milliammeter and the other into a microammeter. The shunt resistance of microammeter as compared to milliammeter will be :

A resistor, an inductor and a capacitor are connected in series with a variable frequency source of alternating emf. At resonance, the amplitude of current depends on :
(A) Resistance
(B) Inductance
(C) Capacitance
(D) Frequency of source
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On an optical bench of 150 cm, a student used a concave mirror of focal length 20 cm to observe object distance (u) and image distance (v) respectively as :
(A) (40 cm, 10 cm)
(B) (60 cm, 15 cm)
(C) (80 cm, 38 cm)
(D) (60 cm, 30 cm)
(E) (40 cm, 40 cm)

The particular solution of the differential equation \(e^x \sqrt{1-y^2} d x+\frac{y}{x} d y=0\), given that \(y=1\), when \(x=0\), is:

Which of the following will produce turbidity most readily when treated with conc. HCl in presence of anhydrous \(ZnCl _2\) (Lucas reagent)?

Two electrons are moving with different kinetic energies. If 1st electron is moving with kinetic energy \( k \) and the 2nd electron with kinetic energy \( 4k \), the ratio of their de Broglie wavelengths will be respectively:

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Carbohydrates are essential for both plants and animals. Some common examples of carbohydrates are glucose, fructose, sucrose, glycogen, cellulose and starch. They form a major portion of our food. Honey has been used for a long time as an instant source of energy in Ayurvedic medicine. Carbohydrates are used as storage molecules in both plants and animals. The cell wall of bacteria and plants is made of cellulose. We use cellulose in the form of wood for making furniture and as cotton fiber for clothing. They also provide raw material for textiles, paper, lacquers, and breweries. Carbohydrates are classified as Monosaccharides, Oligosaccharides and Polysaccharides on the basis of their behavior towards hydrolysis.
Monosaccharides cannot be hydrolyzed further to simpler units whereas oligosaccharides can yield 2-10 units of monosaccharides on hydrolysis. Polysaccharides, which are non-sugars yield a large number of monosaccharide units on hydrolysis.
Answer the following questions about carbohydrates:
Animal starch is popularly known as

The desirable properties of core of a transformer are

Arrange the following events of embryonic development in a correct sequence.
A. Formation of morula
B. Implantation
C. Cleavage in zygote
D. Formation of blastocyst
Choose the correct answer from the options given below: