Dual Nature of Matter and Radiation (BITSAT Physics): Questions 1 - 5 of 6

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Question number: 1

» Dual Nature of Matter and Radiation » Photoelectric Effect

MCQ▾

Question

The magnitude of saturation photoelectric current depends upon –

Choices

Choice (4) Response

a.

Work function

b.

Stopping potential

c.

Intensity

d.

Frequency

Question number: 2

» Dual Nature of Matter and Radiation » Photoelectric Effect

MCQ▾

Question

For photoelectric emission, tungsten requires light of Equation , if light of Equation wavelength is incident, then emission –

Choices

Choice (4) Response

a.

Takes place

b.

Don’t take place

c.

Depends on frequency

d.

May or may not take place

Question number: 3

» Dual Nature of Matter and Radiation » Dual Nature of Radiation

MCQ▾

Question

A body radiated Equation energy at a temperature of Equation . If the temperature is increased to Equation , then it radiates energy at the rate of –

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 4

» Dual Nature of Matter and Radiation » De-Broglie Relation

MCQ▾

Question

The de Broglie wavelength of a neutron when its kinetic energy is Equation , is Equation . What will be its wavelength when its kinetic energy is Equation ?

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 5

» Dual Nature of Matter and Radiation » Dual Nature of Radiation

MCQ▾

Question

The maximum energy in the thermal radiation from a heat source occurs at a wavelength of Equation . According to Wein’s displacement law, the temperature of this source will be Equation times. The temperature of another source for which the wavelength at maximum energy is Equation . Then the value of Equation is –

Choices

Choice (4) Response

a.

2

b.

Equation

c.

4

d.

1

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