Physics (NTSE Stage-2 (National-Level) Scholastic-Aptitude & Language Comprehension): Questions 7 - 9 of 78

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Question number: 7

» Physics » Work and Energy

Appeared in Year: 2013

MCQ▾

Question

A uranium nucleaus at rest decays into a thorium nucleus and a helium nucleus, as shown below. Which of the following is true?

 nucleaus at rest decays into a thorium

Nucleaus at Rest Decays Into a Thorium

nucleaus at rest decays into a thorium

Choices

Choice (4) Response
a.

The helium nucleus has more kinetic energy has more kinetic energy than the thorium nucleus.

b.

Each decay product has the same kinetic energy.

c.

The thorium nucleus has more momentum than the helium nucleus.

d.

The decay products tend to go in the same direction.

Question number: 8

» Physics » Magnetism & Electricity at Work

Appeared in Year: 2013

MCQ▾

Question

Three rings P, Q and R are dropped at the same time over identical hollow magnets as shown below:

Three magnets and rings P, Q and R

Three Magnets and Rings P, Q and R

Three rings dropped on three hollow magnets

Which of the following describes the order in which the ring P, Q and R reach the bottom of the magnet?

Choices

Choice (4) Response
a.

Rings P and R arrive simultaneously, followed byQ.

b.

Rings Q and R arrive simultaneously, followed by P.

c.

They arrive in the order P, R, Q.

d.

They arrive in the order P, Q, R.

Question number: 9

» Physics » Magnetism & Electricity at Work

Appeared in Year: 2013

MCQ▾

Question

Three different circuits (I, II and III) are constructed using identical batteries and resistors of R and 2R ohm. What can be said about current I in arm AB of each circuit?

Three different circuits constructed using resistors

Three Different Circuits Constructed Using Resistors

Find the relation between current flowing from arm AB in each circuit

Choices

Choice (4) Response
a.

III<II<IIII

b.

II<III<IIII

c.

II=III=IIII

d.

II>III=IIII

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