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## Basic Science (Objective) (Pages :27) <<< Back

• 181 Structure of solids is investigated by using?

Ans : X-rays
• 182 The most suitable unit for expressing nuclear radius is?

Ans : Fermi
• 183 Erg sec is the unit of?

Ans : Planck’s constant
• 184 Maxwell is the unit of?

Ans : Magnetic flux
• 185 Unit of solid angle is?

• 186 Pick out the only scalar quantity?

Ans : Power
• 187 Five equal forces of 10 N each are applied at one point and all are lying in one plane. If angles between them are equal, the resultant of these forces wil be?

Ans : Zero
• 188 Bernoulli’s principle does not explain?

Ans : Lift of a jet
• 189 An ideal liquid flows through a horizontal tube of variable diameter. The pressure is lowest where the?

Ans : Velocity is highest
• 190 When a fluid passes through the constricted part of a pipe its?

Ans : Velocity increases and pressure decreases
• 191 The rate of leak from a hole in a tank is?

Ans : More if situated near the bottom
• 192 Dynamic lift is related to?

Ans : Bernoulli’s theorem
• 193 A gale blows over a house. The force due to the gale on the roof is?

Ans : In the upward direction
• 194 A large tank having a small hole at the bottom is filled with water to a height h. if the stream of water coming out of the hole is directed vertically upwards it will?

Ans : Rise to height h
• 195 The velocity of flow of a liquid through an orifice at the bottom of a tank depends on the?

Ans : Both (b) and (c)
• 196 An application of bernoulli’s equation for fluid flow is found in?

Ans : Dynamic lift of an aeroplane
• 197 What is the SI unit of pressure?

Ans : Pascal
• 198 Maxwell is the unit of?

Ans : Magnetic flux
• 199 Pick out the only scalar quantity?

Ans : Power
• 200 An object with a constant speed?

Ans : Is always accelerated
• 201 Distance of stars is measured in?

Ans : Light year
• 202 Earliest thermometer was developed by?

Ans : Galileo
• 203 SI unit of temperature is?

Ans : Kelvin
• 204 The correct value of 00C on the Kelvin scale is?

Ans : 27.315K
• 205 The change in temperature of a body is 500C. the change on Kelvin scale is?

Ans : 50K
• 206 The temperature of a gas is measured with a?

Ans : Pyrometer
• 207 The temperature of the sun is measured with?

Ans : Pyrometer
• 208 Fahrenheit scale divides two fixed points into?

Ans : 180 Parts
• 209 SI unit of heat is?

Ans : Joule
• 210 When an object is heated, the molecules of that object?

Ans : Began to move faster

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