Classical Mechanics-Relativistic Kinematics (GATE Physics): Questions 5 - 8 of 16

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Question number: 5

» Classical Mechanics » Relativistic Kinematics

Appeared in Year: 2012

MCQ▾

Question

A rod of proper length L0 oriented parallel to the X- axis moves with speed 2C3 along the Y – axis in the S – frame, where C is the speed of light in free space. The observer is also moving along the X – axis with speed C2 with respect to the S – frame. The length of the rod as measured by the observer is

Choices

Choice (4) Response

a.

0.48L0

b.

0.87L0

c.

0.35L0

d.

0.97L0

Question number: 6

» Classical Mechanics » Relativistic Kinematics

Appeared in Year: 2013

MCQ▾

Question

An electron is moving with a velocity of 0.85c in the same direction as that of a moving photon. The relative velocity of the electron with respect to photon is –

Choices

Choice (4) Response

a.

c

b.

0.15c

c.

0.15c

d.

f

Question number: 7

» Classical Mechanics » Relativistic Kinematics

Appeared in Year: 2013

MCQ▾

Question

The relativistic form of Newton’s second law of motion is –

Choices

Choice (4) Response

a.

F=mc2c2v2dvdt

b.

F=mc2v2cdvdt

c.

F=mc2v2c2dvdt

d.

F=mcc2v2dvdt

Question number: 8

» Classical Mechanics » Relativistic Kinematics

Appeared in Year: 2010

MCQ▾

Question

A π0 meson at rest decays into two photons, which move along the x axis. They are both detected simultaneously after a time, t=10s . In an inertial frame moving with a velocity V=0.6c in the direction of one of the photons, the time interval between the two detections is –

Choices

Choice (4) Response

a.

20s

b.

15s

c.

10s

d.

0s

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