CDS || SCIENCE || PHYSICS MINI MOCK

When the wavelength of light coming from a distant star is measured it is found shifted towards the red. Then the conclusion is

Which of the following is a true statement about surface tension?

Find the average power required to lift a mass of 100kg to a height of 60m in 60 seconds?

When scattering of a fine beam of light enters a room through a small hole this phenomenon is known as______.

When a body is traveling in a circle at a constant speed it has

If a high-speed bullet hits and gets embedded in a solid resting on a frictionless table, then what is conserved?

When a race car moving with a constant velocity 20 m/s on a circular track with a radius 100 m, then what is the time taken for completing one revolution?

The gun recoils after firing a bullet due to-

A 100 W electric bulb is used for 10 hours a day. How many units of energy are consumed in 30 days?

The Hooke's law is valid for

Two pieces of conductor of same material and of equal length are connected in series with a cell. One of the two pieces has cross-sectional area double that of the other. Which one of the following statements is correct in this regard?

consider the following statement

Statement 1: the cover of a solar cooker made of glass.

Statement 2: glass is cheap, transparent, one can see the through and it is good conductor of heat.

Kaleidoscope works on the phenomena of

consider the following

Statement 1: Solar eclipses are so rare.

Statement 2: the penumbra is a half-shadow that occurs when a light source is only partly covered by an object, when the Moon obscures part of the Sun's disk.