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Wave Energy Quiz

1. 1.0 kW m-2
2. 20 kW m-2
3. 5 kW m-2
4. 8 kW m-2

A

Attraction and Repulsion Quiz

MCQ: Phenomena in which a charged body attract uncharged body is called

1. electrostatic induction
2. electric current
3. charge movement
4. magnetic induction

A

Electrical Current Quiz

MCQ: Semiconductors have electron number density of order

1. 1024 m-3
2. 1020 m-3
3. 1012 m-3
4. 1023 m-3

D

Orbiting Charges Quiz

MCQ: An electron is travelling at right angles to a uniform magnetic field of flux density 1.2 mT with a speed of 8 × 106 m s-1, radius of circular path followed by electron is

1. 3.8 cm
2. 3.7 cm
3. 3.6 cm
4. 3.5 cm

A

Electron Waves Quiz

MCQ: High speed electrons have wavelength of order

1. 10-15 m
2. 10-14 m
3. 10-16 m
4. 10-17 m

A