'Pyrheliometer' is used for measuring
A. Sun spots
B. Solar radiation
C. Air temperature
D. Temperature of plants
Answer: Option B
A. Sun spots
B. Solar radiation
C. Air temperature
D. Temperature of plants
Answer: Option B
Newton is SI unit of . . . . . . . .?
A. Weight and Velocity
B. Weight and Force
C. Weight and Mass
D. Weight and Acceleration
A. cannot be measured
B. can be expressed in the form of law
C. can be represented completely by its magnitude and unit
D. Both B and C
A. a-2, b-3, c-1, d-4
B. a-2, b-3, c-4, d-1
C. a-1, b-3, c-4, d-2
D. a-4, b-3, c-2, d-1
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