slantingly towards the right on the markings
slantingly towards the left on the markings
vertically downwards on the markings
vertically upwards on the markings
Correct answer is C
No explanation has been provided for this answer.
The bond between silicon and germanium is
dative
covalent bond
trivalent
ionic
Correct answer is B
No explanation has been provided for this answer.
The energy of a photo having a wavelength of 10-10m is
(h= 6.63 x 10 -34Js, c =3.0 x 10 8ms-1)
2.0 x 10 -15J
1.7 x 10 -13J
2.0 x 10 -12J
1.7 x 10 -12J
Correct answer is A
E = \(\frac{hc}{\lambda}\)
E = \(\frac{6.63 \times 10^{-34} \times 3 \times 10^18}{10^{-10}}\)
E = 2 x 10-15J
The particle nature of light is demonstrated by the
photoelectric effect
speed of light
colours of light
diffraction of light
Correct answer is A
No explanation has been provided for this answer.
In photo-emission, the number of photo-electrons ejected per second depends on the?
frequency of the beam
work function of the metal
threshold frequency of the metal
intensity of the beam
Correct answer is D
The photoelectric effect is dependent upon various factors including frequency of light, intensity of light, nature of material, energy of light and potential difference.