MCQ
An atomic mass unit (amu) will be equal to :
  • 12th part of the mass of carbon atom
  • B
    12th part of the mass of oxygen atom
  • C
    One 16th of the mass of the hydrogen atom
  • D
    One 16th of the mass of a helium atom

Answer

Correct option: A.
12th part of the mass of carbon atom
(a) - 12th part of the mass of carbon atom

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

Which of the following waves is used in speed gun to measure the speed of ball in cricket match?

A rectangular coil of 300 turns has an average area of average area of 25 cm × 10 cm. The coil rotates with a speed of 50 cps in a uniform magnetic field of strength 4   about an axis perpendicular of the field. The peak value of the induced e.m.f. is (in volt)

(a) 3000 π

(b) 300 π

(c) 30 π

(d) 3 π

Intrinsic semiconductor is electrically neutral. Extrinsic semiconductor having large number of current carriers would be

(a) Positively charged

(b) Negatively charged

(c) Positively charged or negatively charged depending upon the type of impurity that has been added

(d) Electrically neutral

Assertion :   A star which appears blue will be much hotter than the sun

Reason     : It is based on Wien's law

(a) If both assertion and reason are true and the reason is the correct explanation of the assertion.

(b) If both assertion and reason are true but reason is not the correct explanation of the assertion.

(c) If assertion is true but reason is false.

(d) If the assertion and reason both are false.

The frequencies of X-rays, g-rays and ultraviolet rays are respectively a, b and c. Then

(a) a < b, b > c

(b) a > b, b > c

(c) a > b, b < c

(d) a < b, b < c

A charge is brought from a point on the equatorial plane of a dipole to its mid-point. Which of the following quantities remains constant?
A circular loop carrying a current is replaced by an equivalent magnetic dipole. A point on the loop is in:
In given graph if $V_{02}>V_{01}$ then __________ .
Image

In the Wheatstone's bridge shown, P = 2 Ω, Q = 3Ω, R = 6Ω and S = 8Ω. In order to obtain balance, shunt resistance across 'S' must be

(a) 2 Ω

(b) 3 Ω

(c) 6 Ω

(d) 8 Ω

From Maxwell’s hypothesis, a charging electric field gives rise to: