Test: Developments leading to Bohr's Model of Atom - NEET MCQ

1.724 x 10⁴ cm^-1

4.16 x 10⁶ m^-1

4 x 10¹⁴ Hz

219.3 x 10³ cm^-1 

199.51J

3.3 x 10^-19J

6.626 x 10^-34 J

2.31 x 10⁵ J

6.56 nm

65.6 nm

0.656 nm

656 nm

3.98 x 10^-15 J

3 x 10¹⁵J

3.9 x 10⁸ J

3 x 10^-34 J

E₁ = 2E₂ 

E₁ = E₂

E₂ = 2E₁

494.5 x 10^-6 J/atom

8169.5 x 10^-10 J/atom

5.85 x 10^-15 J/atom

8.214 x 10^-19 J/atom

6.6 x 10^-34 m

3 x 10^-8 m

1.8 x 10^-7 m

6.6 x 10^-7 m

3 x 10²⁰ s^-1

2 x 10^-20 s^-1

2 x 10²⁰ s^-1

1 x 10^-20 s^-1

There is no time lag between the striking of light beam and the ejection of electrons from the metal surface

The number of electrons ejected is inversely proportional to the intensity of light

Photoelectric effect is not observed below threshold frequency

The kinetic energy of the electrons increases with increase in frequency of light used

1.2 x 10¹⁴ Hz

8 x 10¹⁵ Hz

1.2 x 10¹⁶ Hz

4 x 10¹² Hz

Different colours are seen as different bands in the spectrum

The colours continuously absorb energy to form a spectrum

The violet colour merges into blue, blue into green, green into yellow and so on

It is a continuous band of coloured and white light separating them

n₁ = 1 and n₂ = 2, 3, 4

n₁ = 3 and n₂ = 4, 5, 6

n₁ = 1 and n₂ = 3, 4, 5

n₁ = 2 and n₂ = 3, 4, 5

200 nm - 370 nm

780 nm - 890 nm

380 nm - 760 nm

900 nm - 2000 nm

Atomic absorption spectra

Atomic emission spectra

Continuous spectra

None of these

(A)→(iii), (B)→(ii), (C)→(i), (D)→(iv)

(A)→(ii), (B)→(iv), (C)→(i), (D)→(iii)

(A)→(i), (B)→(iii), (C)→(iv), (D)→(ii)

(A)→(iv), (B)→(i), (C)→(ii), (D)→(iii)