XII - PHYSICS | ONLINE ONE MARK TEST - 02 (FULL BOOK)
SHUFFLED ONE MARK (FULL BOOK)
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NAME :  *
1. The particle size of ZnO material is 30 nm. Based on the dimension it is classified as ________
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1 point
2.The light emitted in an LED is due to ___________
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1 point
3.The charge of cathode rays is
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4.Emission of electrons by the absorption of heat energy is called ________ emission.
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1 point
5.The transverse nature of light is shown in,
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1 point
6.Which of the following electromagnetic radiations is used for viewing objects through fog
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1 point
7.A step-down transformer reduces the supply voltage from 220 V to 11 V and increase the current from 6 A to 100 A. Then its efficiency is
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1 point
8.Three wires of equal lengths are bent in the form of loops. One of the loops is circle, another is a semi-circle and the third one is a square. They are placed in
a uniform magnetic field and same electric current is passed through them. Which of the following loop configuration will experience greater torque ? *
1 point
9.A piece of copper and another of germanium are cooled from room temperature to 80 K. The resistance 
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1 point
10.A parallel plate capacitor stores a charge Q at a voltage V. Suppose the area of the parallel plate capacitor and the distance between the plates are each
doubled then which is the quantity that will change?
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1 point
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