1000+ NEET Physics Chapter Wise Questions and Answers Pdf - 2

Question: 6

The decrease in cosmic ray intensity at the earth’s equator is explained to be due to

(A) production of secondary cosmic rays

(B) high temperature at the equator

(C) earth’s gravitational field

(D) earth’s magnetic field

Question: 7

Who discovered Neutron?

(A) Chadwick

(B) Rutherford and Soddy

(C) Irene Curie and F.Joliot

(D) Bothe and Becker

Question: 8

Mass defect is equal to

(A) Assumed nuclear mass ÷ Real mass

(B) Assumed nuclear mass × Real mass

(C) Assumed nuclear mass + Real mass

(D) Assumed nuclear mass - Real mass

Question: 9

The principle used in Atom bomb is

(A) nuclear interaction

(B) nuclear fusion

(C) nuclear fission

(D) none of the above

Question: 10

X-rays could not be diffracted by ordinary grating on account of their

(A) high velocity

(B) high frequency

(C) short wavelength

(D) high penetrating power