Compton effect shows that
|
(a) X-rays are waves |
(b) X-rays have high energy |
|
(c) X-rays can penetrate matter |
(d) Photons have momentum |
Compton effect shows that
|
(a) X-rays are waves |
(b) X-rays have high energy |
|
(c) X-rays can penetrate matter |
(d) Photons have momentum |
(d) Photons have momentum
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A ray of light incident normally on an isosceles right angled prism travels as shown in the figure. The least value of the refractive index of the prism must be
|
(a) |
(b) |
(c) 1.5 |
(d) 2.0 |
The S.I. unit of electric flux is
|
(a) Weber |
(b) Newton per coulomb |
|
(c) Volt × metre |
(d) Joule per coulomb |
In Young's double slit experiment, the distance between the two slits is 0.1 mm and the wavelength of light used is 4 . If the width of the fringe on the screen is 4 mm, the distance between screen and slit is
|
(a) 0.1 mm |
(b) 1 cm |
(c) 0.1 cm |
(d) 1 m |
In Fresnel’s biprism (μ = 1.5) experiment the distance between source and biprism is 0.3 m and that between biprism and screen is 0.7m and angle of prism is 1°. The fringe width with light of wavelength 6000 Å will be
|
(a) 3 cm |
(b) 0.011 cm |
(c) 2 cm |
(d) 4 cm |