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(a) You have studied that plane and convex mirrors produce virtual images of objects. Can they generate real image under some circumstances? Explain. (b) A virtual image we a
1. Fill a sink or bath tub with water. 2. Practice tapping the cork on the surface of the water (about 3 _times per second works well) to create evenly spaced waves. 3. Tappi
Radar: The term radar is used for radio detection and ranging. Radar having of three types of devices, a transmitter, a receiver and indicator devices. It has very high frequen
In Thomson's effect we pact with only metallic rod and not with thermocouple as in Peltiers effect and Seebeck's effect. (That's why sometimes it is called as homogeneous thermo el
What is the Specific Heat of Copper? Ans) 387 J/Kg. C or 0.0924 Cal/g.C
A 35-kg child is riding on a swing that rises to a maximum height of 0.80 m. Neglecting friction, what is the child's gravitational potential energy at the top of the swing?
Potential barrier One either side of the junction, the region ‘D' becomes free from mobile charge carriers. That is on n-type side of D, no free electrons exist and on p-type s
How do objects move in one dimension?
A boy throws a ball of mass 20 kg vertically upwards.It raises to a maximum height of 100 m.At what height will the kinetic energy be reduced to 70%?
The threshold of hearing is 10 -12 watts/m 2 or 0 dB. How many times more intense than the threshold of hearing is 70dB and what is the actual intensity (in watts/m 2 ) at the 7
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