CBSE Class 10 Physics Sources of Energy MCQs

Question : Factors which decide whether the given fuel is a good fuel are (a) Heat it releases on burning (c) Smoke produced by it on heating (b) Availability of the fuel (d) All of the above   Question : In case of Thermal power plant (a) Electrical energy is…

CBSE Class 10 Physics Electricity MCQs

Question : 30 electrons are flowing through a electric wire in a time of 3se(c) Then the amount of current flowing through the wire is (a) 1.6 X 10-18A  (c) 4.8 X 10-19 A (b) 9 X 10-18A    (d) 9 X 10-19 A  Answer: A     Question : A…

CBSE Class 10 Physics Light Reflection and Refraction MCQs

Question : Coin placed in a bowl when seen from a place just disappears. When water is poured into the bowl without disturbing the coin , the coin (a) Will not be seen (c) Becomes visible again (b) Appears above the water surface (d) Appears very much deep inside the water…

CBSE Class 10 Physics Reflection Refraction Of Light Worksheet

MULTIPLE CHOICE QUESTIONS Question : Rays from sun converge at a point 15 cm in front of a concave mirror. Where should an object be placed so that size of its image is equal to the size of the object? (a) 15 cm in front of the mirror (b) 30 cm in front of the mirror (c…

CBSE Class 10 Physics Human Eye Colorful World Worksheet B

Question : Stars appears to be twinkling because of a. atmospheric refraction b. reflection c. Tyndall effect d. spectrum   Answer :  B     Question : When a person is myopic, he/ she can clearly see  a. Only nearby objects b.…

CBSE Class 10 Physics Electricity Worksheet

Question : Two resistors of resistances 2 Ω and 4 Ω when connected to a battery will have a) Same current flowing through them when connected in parallel b) Same current flowing through them when connected in series c) Same potential difference across them when connected…

CBSE Class 10 Science HOTs Reflection and Refraction

Chapter Light : Reflaction And Refraction MCQ Questions for NCERT Class 10 Science Light Reflection and Refraction Question. An object at a distance of + 15 cm is slowly moved towards the pole of a convex mirror. The image will get (a) shortened and real (b) enlarged…

CBSE Class 10 Physics HOTs Electricity

MCQ Questions for NCERT Class 10 Science Electricity Question. The accumulator which is used for the domestic purpose has the electromotive force of 10 V and with an internal resistance of 0.8 Ω is externally charged by 150 V of the direct current power supply using a series…

CBSE Class 10 Science Sources Of Energy Notes

A black body is a good absorber of heat radiation. Thus, the purpose of the blackened surface is to absorb the maximum amount of heat and to minimize heat loss due to reflection. Glass cover plate The purpose of glass cover plate is to trap heat radiation. It…

CBSE Class 10 Science Michael Faraday Notes

  MICHAEL FAREDAY M. Faraday worked as assistant to Sir Humphry Davy When Davy set out on a long tour of the continent in 1813–15, his valet did not wish to go. Instead, Faraday went as Davy's scientific assistant, and was asked to act as Davy's valet until a…

CBSE Class 10 Science Magnetic Effect Of Current Notes

Solenoid : A Coil of many circular turns of insulated copper wire wrapped closely in the shape of a cylinder is called solenoid.  The real picture of a solenoid Magnetic field due to a current in a solenoid : • Using R.H. Thumb Rule, we can draw the pattern of…

CBSE Class 10 Science Electricity Notes

ELECTRICITY Electricity is a general term that encompasses a variety of phenomena resulting from the presence and flow of electric charge. These include many easily recognizable phenomena such as lightning and static electricity, but in addition, less familiar concepts such…

CBSE Class 9 Science Archimedes Notes

CBSE Class 10 Physics Archimedes. Learning the important concepts is very important for every student to get better marks in examinations. The concepts should be clear which will help in faster learning. The attached concepts made as per NCERT and CBSE pattern will help the…

CBSE Class 10 Physics Tungsten Assignment

1. Why tungsten is used exclusively for filaments of electric bulbs? 2. When you break a bar magnet in half, how many poles does each piece have? 3. Which of the compass-needle orientations in the figure below might correctly describe the magnet’s field at that point? 4.…