Question # 1

The direction of induced current is such that it opposes the very cause that has produced it This is the law of

Choose an answer

Lenz

Faraday

Kirchoff

Fleming

For obtaining appreciable extension the wire should be

Choose an answer

Short and thin

Long and thin

Short and tick

Long and thick

Two electric bulbs of 200 W and 100 W have same voltage.If R1 and R2 be their resistance respectively then

Choose an answer

R₁ = 2R₂

R₂ = 2R₁

R₂ = 4R₁

R₁ = 4R₂

Ultra-violet radiation of 6.2 eV falls on an aluminium surface K.E of fastest electrons emitted is(work function = 4.2 eV)

Choose an answer

3.2 x 10-21 J

3.2 x 10-19 J

7 x 10-25 J

9 x 10-32 J

A sun rise or sun set, the sun looks reddish because.

Choose an answer

The sun is coldest at these times

Of the effects of reflection and refraction

The sun is hottest at these times

Of the scattering of light

A couple produces

Choose an answer

Purely linear motion

Purely rotational motion

Linear and rotational motion

No motion

A piece of fuse wire melts when a current of 15 ampere flows through it.With this current, if it dissipates 22.5 W. the resistance of fuse wire will be

Choose an answer

Zero

10 Ω

1 Ω

0.10 Ω

Ball pen function on the principle of

Choose an answer

Viscosity

Boyle's law

Gravitational force

Surface tension

A 220 V, 50 Hz, AC source is connected to an inductance of 0.2.H and a resistance of 20 ohm in series What is the current in the circuit?

Choose an answer

10 A

5 A

33.3 A

3.33 A

More Classes

Other Links

NAT I Medical Physics MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer