Value of acceleration due to gravity is minimum on which of these planets ?
A. Jupiter
B. Neptune
C. Mars
D. Mercury
EVERYDAY SCIENCE
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Distance between any two consecutive nodes or antinodes in a stationary wavelength (λ) is _____ ?
A. λ/4
B. λ/8
C. λ/2
D. λ
Two coherent sources of light produce interference (destructive) when the phase difference between them is _____ ?
A. 2π
B. π
C. π/4
D. π/2
Mohus scale is used for to measure ______ ?
A. Pressure
B. Temperature
C. Humidity
D. Hardness
The unit of force in CGS, system is ______ ?
A. Pound
B. Dyne
C. Newton
D. None of them
Matter itself has energy called _____ ?
A. Chemical energy
B. Nuclear energy
C. Rest energy
D. Potential energy
Kirchhoff’s 2nd rule is related to : _____ ?
A. Battery emf
B. IR Drops
C. junction voltages
D. both “1” and “2”
The power is the dot product of ______ quantities .
A. Force and velocity
B. Force and speed
C. Force and time
D. All of them
A person wears spectates with concave lenses. It means that normally (when not using glasses), the image of distant objects is focused in his eyes :
A. in front of the retina
B. on the blind spot
C. behind the retina
D. on the retina
A bird sitting on a high tension electric wire does not get electrocuted because :
A. its feet are good insulators
B. it does not form a closed path for the flow of current
C. Sit has high resistance
D. the body is earthed