Dual Nature of Radiation and Matter Test

Result

Dual Nature of Radiation and Matter Test - 76

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Weekly Quiz Competition

Question 1
4 / -1

An electron is moving in electric field and magnetic field it will gain energy from

A
Electric field

B
Magnetic field

C
Both of these

D
None of these
Question 2
4 / -1

Positive rays were discovered by

A
Thomson

B
Goldstein

C
W. Crookes

D
Rutherford
Question 3
4 / -1

A beam of cathode rays is subjected to crossed Electric (E) and Magnetic fields (B). The fields are adjusted such that the beam is not deflected. The specific chargeof the cathode rays is given by

A

B

C

D

Solution
Question 4
4 / -1

Positive rays are very identical to

A
α–particle rays

B
β–rays

C
γ–rays

D
None of these
Question 5
4 / -1

A charged oil drop of mass 2.5 × 10^–7 kg is in space between the two plates, each of area 2 × 10^–2 m² of a parallel plate capacitor. When the upper plate has a charge of 5 × 10^–7 C and the lower plate has an equal negative charge, the oil remains stationary. The charge of the oil drop is (Take g = 10 m /s²)

A
9 × 10^–1 C

B
9 × 10^–6 C

C
8.85 × 10^–13 C

D
1.8 × 10^–14 C

Solution
Question 6
4 / -1

A photon, an electron and a uranium nucleus all have the same wavelength. The one with the most energy

A
Is the photon

B
Is the electron

C
Is the uranium nucleus

D
Depends upon the wavelength and the properties of the particle

Solution
Question 7
4 / -1

A particle which has zero rest mass and non-zero energy and momentum, must travel with a speed

A
Equal to c, the speed of light in vacuum

B
Greater than c

C
Less than c

D
Tending to infinity
Question 8
4 / -1

A particle of mass 1 mg has the same wavelength as an electron moving with a velocity of 3 × 10⁶ms^–1. The velocity of the particle is
(Mass of electron = 9.1 × 10^–31 kg)

A
3 × 10^–31ms^–1

B
2.7 × 10^–21ms^–1

C
2.7 × 10^–18ms^–1

D
9 × 10^–2ms^–1

Solution
Question 9
4 / -1

The de-Broglie wavelength λ associated with an kinetic energy E is given by the expression

A

B

C

D

Solution
Question 10
4 / -1

Dual nature of radiation is shown by

A
Diffraction and reflection

B
Refraction and diffraction

C
Photoelectric effect alone

D
Photoelectric effect and diffraction

Solution