Q1. Which one of the following instruments is used to study dispersion of light?
(a) Microscope
(b) Telescope
(c) Spectrometer
(d) Photometer
Q2. A fountain pen works on the principle of
(a) flow of liquids from higher to lower potential
(b) capillary action
(c) Bernoulli’s principle
(d) Viscosity of liquids
Q3. Pycnometer is an instrument used to measure the
(a) density
(b) intensity of solar radiation
(c) intensity of earthquake
(d) high temperatures
Q4. Fibre optics work on the principle of
(a) scattering of light
(b) total internal absorption
(c) total internal reflection
(d) optical rotation
Q5. A decibel is
(a) a musical instrument
(b) the wavelength of noise
(c) a musical note
(d) a measure of sound level
Q6. Remote-sensing device has an inbuilt source of
(a) X-ray
(b) g-ray
(c) ultraviolet ray
(d) infrared ray
Q7. The atmosphere is heated mainly by
(a) Insolation
(b) Conduction
(c) Radiation
(d) Convection
Q8. A device used for converting a.c. into d.c. is called
(a) transformer
(b) rectifier
(c) induction coil
(d) dynamo
Q9. Energy of Ultraviolet rays is great than
(a) Infra-red rays
(b) Gamma rays
(c) X-rays
(d) Cosmic rays
Q10. The instrument used to measure the speed of the wind is
(a) Altimeter
(b) Anemometer
(c) Chronometer
(d) Dosimeter
Solutions
S1. Ans.(c)
S2. Ans.(b)
S3. Ans.(a)
S4. Ans.(c)
S5. Ans.(d)
S6. Ans.(d)
S7. Ans.(c)
S8. Ans.(b)
S9. Ans.(a)
S10. Ans.(b)
