Physics (NTSE Stage-1 (State-Level) Scholastic-Aptitude & Language Comprehension): Questions 58 - 63 of 133

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Question number: 58

» Physics » Motion and Force

MCQ▾

Question

A magnet is placed in iron powder and then taken out, and then maximum iron powder is at

Choices

Choice (4) Response

a.

some distance away from the North pole

b.

some distance away from the South pole

c.

the end of the magnet

d.

the middle of the magnet

Question number: 59

» Physics » Motion and Force

MCQ▾

Question

If the current is flowing clockwise in a circular coil, the direction of magnetic lines of force inside the coil is

Choices

Choice (4) Response

a.

towards you

b.

away from you

c.

towards the center along the radius

d.

away from the center along the radius

Question number: 60

» Physics » Sound

MCQ▾

Question

SONAR is based on the principle of

Choices

Choice (4) Response

a.

vibration

b.

echo

c.

resonance

d.

All of the above

Question number: 61

» Physics » Magnetism & Electricity at Work

MCQ▾

Question

A magnetic needle kept in a non-uniform magnetic field experiences

Choices

Choice (4) Response

a.

a torque but not a force

b.

a force and torque

c.

Neither a torque nor a force

d.

a force but not a torque

Question number: 62

» Physics » Magnetism & Electricity at Work

MCQ▾

Question

One Tesla is equal to

Choices

Choice (4) Response

a.

10- 4 gauss

b.

10 7 gauss

c.

10 4 gauss

d.

10- 8 gauss

Question number: 63

» Physics » Light

MCQ▾

Question

On burning an element in air, forms an oxide. On dissolving this oxide in H2O it forms an oxyacid. This oxide is a very good dehydrating agent and on reacting with caustic soda, it forms salt but no salt-formation takes place with H2SO4 . The oxyacid of the element is

Choices

Choice (4) Response

a.

boric acid

b.

hypo phosphorus acid

c.

phosphoric acid

d.

phosphorus acid

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