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Question:- Mach number is used in connection with the speed of A. sound B. aircraft C. spacecraft D. ships
Answer:- Option B
Question:- On a stationary sail boat, air is blown from a fan attached to the boat. The boat A. moves in opposite direction in which the air is blown B. does not move C. moves in the same direction in which air blows D. spins around
Answer:- Option B
Question:- Rainbow is due to A. absorption of sunlight in minute water droplets B. diffusion of sunlight through water droplets C. ionisation of water deposits D. refraction and reflection of sunlight by water droplets
Answer:- Option D
Question:- Stars which appear single to the naked eye but are double when seen through a telescope are A. novas and supernovas B. binaries C. asteroids D. quasars
Answer:- Option B
Question:- ML2T-2 is the dimensional formula for A. moment of inertia B. pressure C. elasticity D. couple acting on a body
Answer:- Option D
Question:- Solar eclipse will take place when A. the sun is between the moon and the earth B. the earth is between the moon and the sun C. the moon is between the sun and the earth D. the moon does not lie on the line joining the sun and the earth
Answer:- Option C
Question:- Isotopes of an element contain A. the same number of protons but different number of neutrons B. the same number of neutrons but different number of protons C. equal number of protons and electrons D. equal number of nucleons
Answer:- Option A
Question:- One watt-hour is equivalent to A. 6.3 x 103 J B. 6.3 x 10-7 J C. 3.6 x 103 J D. 3.6 x 10-3 J
Answer:- Option C
Question:- Sir C.V. Raman was awarded Nobel Prize for his work connected with which of the following phenomenon of radiation? A. Scattering B. Diffraction C. Interference D. Polarization
Answer:- Option A
Question:- In which of the following industries is mica as a raw material? A. Cement B. Glass and Pottery C. Iron and Steel D. Electrical
Answer:- Option D
Question:- Radiocarbon dating technique is used to estimate the age of A. rocks B. monuments C. soil D. fossils
Answer:- Option D
Question:- Identify the vector quantity from the following A. Heat B. Angular momentum C. Time D. Work
Answer:- Option B
Question:- Large astronomical telescopes always use as objective A. lens B. mirror C. combinations of lenses D. None of the above
Answer:- Option C
Question:- One should not connect a number of electrical appliances to the same power socket because A. this can damage the appliances due to overloading B. this can damage the domestic wiring due to overloading C. this can damage the electrical meter D. the appliance will not get full voltage
Answer:- Option B