If the interatomic spacing in a steel wire is 3.0 Å and Y of steel is
If the interatomic spacing in a steel wire is 3.0 Å and Y of steel is 20×10¹⁰ N/m², then force constant is
Options
(a) 6×10⁻² N/Å (b) 6×10⁻⁹ N/Å (c) 4×10⁻⁵ N/Å (d) 6×10⁻⁵ […]
RA2001
Which of the following statements is correct?
Which of the following statements is correct?
Options
(a) A good absorber is a bad emitter (b) Every body absorbs and emits radiations at every temperature (c) The energy of radiation emitted from a […]
Which of the following is true for elastic potential energy density?
Which of the following is true for elastic potential energy density?
Options
(a) Energy density=1/2 x strain x stress (b) Energy density= (strain)² x volume (c) Energy density= strain x volume (d) Energy density […]
Which is correct relation?
Which is correct relation?
Options
(a) Y<σ (b) Y>σ (c) Y=σ (d) σ=±1
Correct Answer:
Y>σ
Explanation:
No explanation available. Be the first to write the explanation for this question by commenting below.
Stress to strain ratio is equivalent to
Stress to strain ratio is equivalent to
Options
(a) Modulus of rigidity (b) Poisson’s ratio (c) Reynold number (d) Fund number
Correct Answer:
Modulus of rigidity
Explanation:
No explanation available. Be the first to […]
When two small bubbles join to form a bigger one, energy is
When two small bubbles join to form a bigger one, energy is
Options
(a) Released (b) Absorbed (c) both (a) and (b) (d) None of these
Correct Answer:
Released
Explanation:
No explanation available. Be […]
Oil spreads over the surface of water where as water does not spread
Oil spreads over the surface of water where as water does not spread over the surface of the oil because
Options
(a) Surface tension of water is very high (b) Surface tension of water […]
If liquid level falls in a capillary then radius of capillary will be
If liquid level falls in a capillary then radius of capillary will be
Options
(a) Smaller (b) Greater (c) Same (d) None of these
Correct Answer:
Greater
Explanation:
No explanation available. Be the first […]
If capillary experiment is performed in vaccum, then a liquid under the condition
If capillary experiment is performed in vaccum, then a liquid under the condition
Options
(a) will raise (b) will remain as such (c) will fall (d) None of these
Correct Answer:
will raise
Explanation: […]
The value of workdone for rotating a magnet of magnetic moment M by an angle θ in external
The value of workdone for rotating a magnet of magnetic moment M by an angle θ in external magnetic field H is given by
Options
(a) MH cos θ (b) 2MH sin²(θ/2) (c) MH […]