त्वरण किसे कहते है
किसी वस्तु के वेग परिवर्तन की दर को त्वरण (त्वरण) कहते हैं। इसके मात्रक M/S2 होता है और यह एक सशस्त्र राशि हैं
Physics One Liners GK Questions
1. Which of the following is used as ‘a moderator in nuclear reactor? – Graphite
2. A man with a dark skin, in comparison with a man with a white skin, What will experience? – Less heat and less cold
3. A temperature at which both the Fahrenheit and the centigrade scales have the same value? – -40°
4. Angular separation between two colours of the spectrum depends upon which thing? – Angle of deviation
5. If a bar magnet is cut length wise into 3 parts, what will the total number of poles be? – 6
6. The unidirectional property of a pn-junction is useful for its use as which thing? – Rectifier
7. Which of the following is good nuclear fuel? – Plutonium-239
8. We cannot see during a fog. why? – Because of scattering of light
9. Which physical quantities have the same dimensions? – Momentum and impulse
10. Who firstly demonstrated experimentally the existence of electromagnetic wave? – Hertz
11. Conversion of chemical energy into electrical energy occurs in which thing? – Battery
12. By which impact is Nuclear fission is caused ? – Neutron
13. When milk is churned, how does the cream separate from it? – Due to the centrifugal force
14. Who does a liquid drop tend to assume a spherical shape? – Surface tension
15. By which Radio waves of constant amplitude can be generated? – Oscillator
16. Why are Metals good conductor of heat than insulator? – They contain free electrons
17. If the temperature of a semiconductor rises, what is its resistivity? – Decrease
18. Who gave the first experimental value of G? – Cavendish
19. What is the product of the time period of a wave and its frequency? – Unity
20. When the radius of the T.G. coil is decreased, what does happen in its sensitiveness? – Increases
21. Einstein’s mass energy relation is given by which expression? – E = mc2
22. The mass-energy relation is the outcome of which teory? – Special theory of relativity
23. On which conservation law, does a rocker work? – Angular momentum
24. If the temperature inside a room is increased, what will be the relative humidity? – Decrease
25. What is the relative permeability of a paramagnetic material? – Greater than unity
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