Zygotic meiosis is the characteristic of a) Fucus b) Funaria c) Marchantia d) Chlamydomonas
A null vector is a vector that has magnitude equal to zero and is directionless. It is the resultant of... View Article
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What is the colour of ferrous sulphate crystals? How does this colour change after heating?
The rate of flow of electric charge is known as electric current. Electric current is expressed by the rate of... View Article
Differentiate between contact and non-contact forces
The direct rays of the sun fall on the equator only twice in the year. These two days include 21st... View Article
The inertia of a moving object depends upon? a) momentum b) Speed c) Shape d) Mass
c) Mass of the object Explanation The inertia of a moving object depends on the mass of the object. The... View Article
Which of these is NOT classified as a greenhouse gas? (a) Methane (b) Carbon dioxide (c) Water Vapour (d) CFC
The unit of calorific value is kJ/kg or J/kg. Calorific value provides the amount of energy that is released when... View Article
Name the place where the rivers Ganga and Brahmaputra meet
Argon or Neon gas is filled in electric bulbs. Argon is an inert gas which does not give rise to... View Article
Where do hens live?
a) A Sponge is a solid having a definite shape and volume. There are minute pores present in the sponge.... View Article
What is wattless current?
Wattless Current in an AC circuit is when the average power consumed in such circuit corresponds to Zero. Such current... View Article
Explain the conclusion of final accounts of partnership firm
A LR circuit consists of an inductor and a resistor in it. Where the inductor is denoted by L an... View Article
A 10 mm long awl pin is placed vertically in front of a concave mirror. A 5 mm long image of the awl pin is formed at 30 cm in front of the mirror. The focal length of this mirror is? (1) 30 cm (2) 20 cm (3) 40 cm (4) 60 cm
Answer: (2) 20 cm The focal length of the concave mirror can be written as 1/f = 1/v + 1/u... View Article
Mushroom rocks are found in (a) Deserts (b) River valleys (c) Glaciers
a) The type of current used in household supply is AC current. b) The type of current given by a... View Article
What does the term force per unit area is called?
Pressure is defined as force per unit area. Explanation The force applied to a unit area of surface; measured in... View Article
Find the cube root of 6859 by prime factorization method
Absolute refractive index is the refractive index of a medium in vacuum. The refractive index of glass is 1.5. It... View Article
Explain the relationship between watt and volt
Like poles repel each other and unlike poles attract. A magnetic force flows from the north pole to the south... View Article
Name animals that give us milk.
If the average acceleration is different between different points along its path, either in magnitude or in direction or both... View Article
How to compare different countries or states
Answer: The electrostatic force between two charges in air is given by \(\begin{array}{l}F_{a} = \frac{1}{4\pi \varepsilon _{o}}\frac{q_{1}q_{2}}{r^{2}}\end{array} \) The... View Article
Differentiate between map and globe
The magnetic fields are constituted of point charges called electrons which are moving constantly circles around a conductor. These magnetic... View Article
In vacuum the speed of light depends upon (a) frequency (b) wavelength (c) velocity of light sources (d) None of these – Physics Q&A
The correct answer is (d) None of these Speed of light in a different medium The speed of light depends on... View Article
Pradeep receives an export order for garments. He has 30 machines to complete the order in 60 days. How many machines would be required to complete the job in 40 days?
The International System (SI) unit of field intensity for magnetic fields is Tesla (T). One tesla (1 T) is defined... View Article
The rate of change of velocity is called?
The rate of change of velocity is ACCELERATION. Explanation Like velocity, acceleration is a vector quantity and has both magnitude... View Article
