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Quantum Physics

Total questions: 7

Worksheet time: 4mins

Name
Class
Date
1.

Waves associated with electrons are referred to as

a)

plasma waves

b)

UV waves

c)

gamma rays

d)

matter waves

2.

Frequency below which no electrons are emitted from metal surface is

a)

minimum frequency

b)

angular frequency

c)

maximum frequency

d)

threshold frequency

3.

Loss of energy of an electron results in

a)

absorption of photon

b)

emission of photon

c)

destruction of photon

d)

formation of photon

4.

Wavelength of a 65 kg person running at a speed of 3 m s-1 through an opening of width 0.80 m is

a)

34 m

b)

35 m

c)

3.4 × 10-36 m

d)

3.5 m

5.

According to Newton, light travels as

a)

particles

b)

waves

c)

both A and B

d)

dust

6.

In electron diffraction, rings behave as

a)

particles

b)

waves

c)

both A and B

d)

rays

7.

When a charged particle is accelerated through a potential difference V, it's kinetic energy

a)

decreases

b)

remains same

c)

increases

d)

varies depending on resistance of wire