AIIMS Physics: Questions 322 - 326 of 500

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Question number: 322

» Electromagnetic Induction & Alternating Currents » Reactance and Impedance

MCQ▾

Question

The reactance of an inductance of 0.05H for 100 Hz A. C. is –

Choices

Choice (4) Response

a.

31.4 Ω

b.

6.28 Ω

c.

3.14 Ω

d.

62.8 Ω

Question number: 323

» Properties of Solids & Liquids » Pressure Due to a Fluid Column

MCQ▾

Question

If a spring balance reads 15 kg when a bucket of water is suspended from it, then what will be the reading of the spring balance when a steel piece of 12 kg suspended from another spring is immersed with half its volume inside water in the bucket?

(Density of the steel is 8.0×103kgm3 )

Choices

Choice (4) Response

a.

23kg

b.

20kg

c.

15.75kg

d.

8.5kg

Question number: 324

» Ray Optics » The Eye

Appeared in Year: 2003

Assertion-Reason▾

Assertion (Ꭺ)

Owls can move freely during night

Reason (Ꭱ)

They have large number of rods on their retina

Choices

Choice (4) Response

a.

Ꭺ is false but Ꭱ is true

b.

Ꭺ is true but Ꭱ is false

c.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

d.

Both Ꭺ and Ꭱ are false

Question number: 325

» Electromagnetic Induction & Alternating Currents » Reactance and Impedance

MCQ▾

Question

The impedance of a circuit, when a resistance 2KΩ and a capacitor of capacitance 1μF are connected in series in an A. C. circuit of frequency 50 Hz is –

Choices

Choice (4) Response

a.

15.33×103Ω

b.

3.75×103Ω

c.

21.0×103Ω

d.

10.13×103Ω

Question number: 326

» Kinematics » Frame of Reference

MCQ▾

Question

A body standing on a long railroad car throws a ball straight upwards, the car is moving on the horizontal road with acceleration 3ms2 . The vertical velocity given is 19.6ms . How far behind the body the ball will fall on the railroad car?

Choices

Choice (4) Response

a.

3 m

b.

24 m

c.

27 m

d.

18 m

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