AIIMS Physics: Questions 473 - 476 of 500

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Question number: 473

» Electrostatics » Electric Field Due to a Dipole

Appeared in Year: 1997

MCQ▾

Question

The electric dipole is placed along the x - axis at the origin O. A point P is at a distance of 20cm from this origin such that OP makes an angle 60° with the x - axis. If the electric field at P makes an angle θ with the x - axis, the value of θ would be – [MP PMT]

Choices

Choice (4) Response
a.

π3

b.

tan1(32)

c.

2π3

d.

π3+tan1(32)

Question number: 474

» Current Electricity » Electric Current

MCQ▾

Question

A current of 1.34A exists in a copper wire of cross - section 1.0mm2 . Assuming each copper atom contributes one free electron. Calculate the drift speed of the free electrons in the wire. The density of copper is 8990kgm3 and atomic mass =63.50 .

Choices

Choice (4) Response
a.

2×104ms

b.

104ms

c.

105ms

d.

2×105ms

Question number: 475

» Electrostatics » Electric Potential

Appeared in Year: 1993

MCQ▾

Question

Two charges 4×108C and 6×108C are located at A and B separated by 50cm . The distance of the point from A on line AB at which the electric potential is zero is given by – [MP PMT]

Choices

Choice (4) Response
a.

40cm

b.

30cm

c.

20cm

d.

10 cm

Question number: 476

» Dual Nature of Matter and Radiation » Dual Nature of Radiation

MCQ▾

Question

If the wavelength of light is 5000 , then the number of waves in 5mm length will be –

Choices

Choice (4) Response
a.

1000

b.

2000

c.

3000

d.

10000

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