AIIMS Physics: Questions 201 - 203 of 500

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Question number: 201

» Magnetic Effects of Current and Magnetism » Earth's Magnetic Field

Appeared in Year: 2005

Assertion-Reason▾

Assertion (Ꭺ)

In high latitudes one sees colorful curtains of light hanging down from high altitudes.

Reason (Ꭱ)

The high energy charged particles from the sun are defected to Polar Regions by the magnetic field of the earth.

Choices

Choice (4) Response

a.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

b.

Ꭺ is true but Ꭱ is false

c.

Ꭺ is false but Ꭱ is true

d.

Both Ꭺ and Ꭱ are false

Question number: 202

» Dual Nature of Matter and Radiation » Photoelectric Effect

Appeared in Year: 2006

Assertion-Reason▾

Assertion (Ꭺ)

The photoelectrons produced by a monochromatic light beam incident on a metal surface have a spread in their kinetic energies.

Reason (Ꭱ)

The work function of the metal varies as a function of depth from the surface.

Choices

Choice (4) Response

a.

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

b.

Ꭺ is true but Ꭱ is false

c.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

d.

Ꭺ is false but Ꭱ is true

Question number: 203

» Dual Nature of Matter and Radiation » Black-Body Radiation

Appeared in Year: 2005

Assertion-Reason▾

Assertion (Ꭺ)

For higher temperature the peak emission wavelength of a black body shifts to lower wavelength.

Reason (Ꭱ)

Peak emission wavelength of black body is proportional to the fourth power of temperature.

Choices

Choice (4) Response

a.

Ꭺ is true but Ꭱ is false

b.

Both Ꭺ and Ꭱ are false

c.

Ꭺ is false but Ꭱ is true

d.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

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