light, Physics

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The number of electrons in an atom of an element is equal, The number of el...

The number of electrons in an atom of an element is equal to its: (1) Atomic weight (2) Atomic number (3) Equivalent weight (4)  Electron affinity Ans: Atomic weigh

Le chateliers principle, Le Chatelier's principle (H. Le Chatelier; 1888) ...

Le Chatelier's principle (H. Le Chatelier; 1888) If a system is in equilibrium, then any change imposed onto the system tends to shift the equilibrium to decrease the effect of

Define motion in two dimensions, In two-dimension motion a body go in a pla...

In two-dimension motion a body go in a plane. e.g. a particle rolling in a circle, a cricket ball caught by a fielder. In the first case the body can go round with a fix velocity o

Newtons law of inertia truck and ladder, Newtons law of inertia Truck and L...

Newtons law of inertia Truck and Ladder As per to Newton's first law, an object in motion continues within motion along with the similar speed and in the similar direction unle

Explain general theory of gravitation, Explain General Theory of Gravitatio...

Explain General Theory of Gravitation The idea of a gravitational field takes all the gravitational effects of a given mass like Earth and expresses them mathematically as a grav

Electricity, An electric iron draws a current of 0.5A.The voltage is 200V. ...

An electric iron draws a current of 0.5A.The voltage is 200V. Calculate the amount of charge flowing through it in 1 hour.

Principle rays to contribute to the image, A person is tasked with creating...

A person is tasked with creating a ray diagram to resolve the characteristics of the image of an object formed by a concave lens. The person has accurately drawn the principal axis

Visual photometry and solid angle, VISUAL PHOTOMETRY: The branch of scien...

VISUAL PHOTOMETRY: The branch of science which deals with measurement of brightness or luminous intensities of light emitted by different sources using certain standards and tech

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Radio waves and microwaves: What are microwaves and radio waves? Ans: Microwaves: 1. The wavelength ranges from 10μm to10m 2. Commonly produced by Electromagnetic osc

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