physics

Which of the following optical instruments does not depend on the use of plane mirrors?

A. kaleidoscope B. simple microscope C. sextant D. simple periscope Correct Answer: Option B B. simple microscope

6 years ago

The amplitude of a wave is the?

A. distance traveled by the wave in a complete cycle of its motion B. maximum displacement of the wave-particle from…

6 years ago

Which of the following statements about a progressive mechanical wave is correct?

A. it can be a plane polarised B. its energy is localised at specific points of its profile C. it…

6 years ago

The pressure exerted by a given mass of gas in a container?

A. decreases if the container is heated B. increases if the molecules of the gas move faster C. increases if…

6 years ago

Which of the following statements is correct?

A. the density of a liquid decreases when it expands B. the density of a liquid increases when the liquids…

6 years ago

Which of the following statements about boiling and evaporation at atmospheric pressure is correct?

A. evaporation and boiling of water take place at 100°C B. evaporation of water takes place at a temperature greater…

6 years ago

The energy required to change a solid to liquid at constant temperature is called?

A. thermal capacity B. has lower specific heat capacity C. latent heat of fusion D. latent heat of vaporization Correct…

6 years ago

The frequency of a swinging pendulum is the?

A. number of complete oscillations the pendulum makes in a second B. number of amplitudes the bob makes in a…

6 years ago

Which of the following quantities has the same unit as energy?

A. power B. work C. force D. momentum Correct Answer: Option B B. work

6 years ago