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Question:- If two bodies of different masses, initially at rest, are acted upon by the same force for the same time, then the both bodies acquire the same A. velocity B. momentum C. acceleration D. kinetic energy
Answer:- Option B
Question:- Pick out the scalar quantity A. force B. pressure C. velocity D. acceleration
Answer:- Option B
Question:- Rectifiers are used to convert A. Direct current to Alternating current B. Alternating current to Direct current C. high voltage to low voltage D. low voltage to high voltage
Answer:- Option B
Question:- out of the following, which is not emitted by radioactive substance? A. Electrons B. Electromagnetic radiations C. Alpha particles D. Neutrons
Answer:- Option D
Question:- Sound waves in air are A. transverse B. longitudinal C. electromagnetic D. polarised
Answer:- Option B
Question:- Magnetism at the centre of a bar magnet is A. minimum B. maximum C. zero D. minimum or maximum
Answer:- Option C
Question:- It is more difficult to walk on a sandy road than on a concrete road because A. sand is soft and concreter is hard B. the friction between sand and feet is less than that between concrete and feet C. the friction between sand and feet is more than that between concrete and feet D. the sand is grainy but concrete is smooth
Answer:- Option B
Question:- Find the maximum velocity for the overturn of a car moving on a circular track of radius 100 m. The co-efficient of friction between the road and tyre is 0.2 A. 0.14 m/s B. 140 m/s C. 1.4 km/s D. 14 m/s
Answer:- Option D
Question:- Of the following properties of a wave, the one that is independent of the other is its A. amplitude B. velocity C. wavelength D. frequency
Answer:- Option A
Question:- Lux is the SI unit of A. intensity of illumination B. luminous efficiency C. luminous flux D. luminous intensity
Answer:- Option A
Question:- What is intensity illumination?
Answer:- The illumination intensity indicates the luminous flux which strikes a surface. The utilised unit of measure is lux: 1 lx = 1 lm/m² (lumens per square meters).
Question:- What are the units of intensity of light?
Answer:- Candela is the SI unit of intensity of light.
Question:- What is intensity and its SI unit?
Answer:- Intensity is denoted by “I”. The S.I unit of intensity is Watt per square meter ( W / m 2 ) o r ( kgs - 3 )
Question:- What is the symbol of intensity?
Answer:- The SI unit of luminous intensity is the candela (cd), an SI base unit.