The original temperature of a black body is 727⁰C. The temperature at which this black
The original temperature of a black body is 727⁰C. The temperature at which this black body must be raised so…
5 years ago
Questions
The length of an elastic string is a metre when the longitudinal tension is 4N and b
The length of an elastic string is a metre when the longitudinal tension is 4N and b metre when the…
5 years ago
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)…
5 years ago
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…
5 years ago
In a capillary tube water raises by 1.2 mm. The height of water that will rise
In a capillary tube water raises by 1.2 mm. The height of water that will rise in another capillary tube…
5 years ago
A fluid is in streamline flow across a horizontal pipe of variable area of cross section
A fluid is in streamline flow across a horizontal pipe of variable area of cross section. For this which of…
5 years ago
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…
5 years ago
The wetability of a surface by a liquid depends primarily on
The wetability of a surface by a liquid depends primarily on Options (a) surface tension (b) density (c) angle of…
5 years ago
The pressure at the bottom of a tank containing a liquid does not depend on
The pressure at the bottom of a tank containing a liquid does not depend on Options (a) Acceleration due to…
5 years ago
A body, which emits radiations of all possible wavelengths, is known as
A body, which emits radiations of all possible wavelengths, is known as Options (a) Good conductor (b) Partial radiator (c)…
5 years ago