BITSAT Physics: Questions 153 - 157 of 158

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Question number: 153

» Magnetic Effects of Current and Magnetism » Para, Dia and Ferro-Magnetic Substances

MCQ▾

Question

The substances in which the magnetic moment of a single atom is not zero, is called as

Choices

Choice (4) Response

a.

Ferromagnetism

b.

Ferrimagnetism

c.

Diamagnetism

d.

Paramagnetism

Question number: 154

» Magnetic Effects of Current and Magnetism » Magnetic Moment

MCQ▾

Question

A bar magnet of magnetic moment 200Am2 is suspended in a magnetic field of intensity 0.25NAm the couple required to deflect it through 300 is –

Choices

Choice (4) Response

a.

20Nm

b.

25Nm

c.

50Nm

d.

15Nm

Question number: 155

» Atoms and Nuclei » Composition and Size of Nucleus

MCQ▾

Question

Sodium has body centered packing. Distance between two nearest atoms is 3.7. The lattice parameter is –

Choices

Choice (4) Response

a.

4.3

b.

3.8

c.

4.9

d.

3.4

Question number: 156

» Atoms and Nuclei » Radioactive Decay Law

MCQ▾

Question

In which sequence the radioactive radiations are emitted in the following nuclear reaction

zXAz+1YAz1KA4z1KA4

Choices

Choice (4) Response

a.

α,βandγ

b.

β,γandα

c.

γ,αandβ

d.

β,αandγ

Question number: 157

» Oscillations and Waves » Speed of a Wave

MCQ▾

Question

If the equation of motion of standing waves is y=0.3sin(314t1.57x), then the velocity of standing waves

Choices

Choice (4) Response

a.

250unit

b.

200unit

c.

400unit

d.

150unit

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