30,

31,

32,

33,

34,

35,

36,

37.

Which is the commonest cancer among females ?
(ಹ) ‏.ات‎ (8) Tongue (~) Lung (D) Breast

Cathode rays are made to pass between the poles of a magnet perpendicular to axis, the
effect of the magnet is :

(ಹ) to increase the velocity of rays

(8) to deflect them towards the north pole

(ಲ) + deflect them towards the south pole

(D) to deflect them upwards above the plain of paper

Photocell is a device to :

(ಹ) store photons

(B) measure light intensity

(C) convert photon energy into mechanical energy

(D) store electrical energy for replacing storage batteries

If the X-ray tube is working at 20 kV then the minimum wavelength of X-rays will be :
(ಹಿ) 062 A ൫ 093 A © 047 A (D) 031A

Isotopes are atoms having :

(ಹಿ) same number of protons, but different number of neutrons
(8) same number of neutrons, but different number of protons
(C) same number of neutrons and protons

(D) none of the above

If an electron jumps from 1% orbit to 3' orbit, then it will :
(5) Absorb energy (B) Release energy
(ಲ) Have no difference in energy (D) It cannot jump from 1% orbit to 34 orbit

Gamma rays are deflected :

(ಹ) Inan electric field but not by a magnetic field
(B) A magnetic field but not by an electric field
(ಲ) Both electric and magnetic लित्‌

(D) Neither electric nor magnetic field

Radioactivity is :
(ಹ) Irreversible process (B) வ disintegration process
(C) Spontaneous (D) All of the above

072/2017 6 A