Question: Motorcycle safety helmet extends the time of collision hence decreasing the________________?

• 1. chance of collision
• 2. force acting
• 3. velocity
• 4. impulse

Question: During long jump, athlete runs before taking the jump. By doing so he__________________?

• 1. provide him a larger inertia
• 2. decreases his inertia
• 3. decreases his momentum
• 4. increases his momentum

Question: When collision between the bodies in a system is inelastic in nature then for system ____________________?

• 1. momentum changes but K.E remain conserve
• 2. K.E changes but momentum remain conserve
• 3. both momentum and K.E changes
• 4. both momentum and K.E remain conserve

Question: In any measurement the significant figures are______________?

• 1. All accurately known and all doubtful digits
• 2. Only accurately known digits
• 3. Only doubtful digits
• 4. All accurately known digits and the first doubtful digit

Question: A digit zero in a measurement__________________?

• 1. May be significant may not significant
• 2. Always significant
• 3. Always insignificant sign
• 4. Significant only if left to a significant figure

Question: Number of significant figures in 0.0173 is_________________?

• 1. 3
• 2. 4
• 3. 5
• 4. 2

Question: Smaller the least count of the instrument more is the measurement________________?

• 1. Accurate
• 2. Precise
• 3. Accurate and precise
• 4. None of these

Question: The dimension of force is__________________?

• 1. MLT-1
• 2. MLT-2
• 3. ML-1T
• 4. ML-1T-2

Question: ML-1 T-2 is the dimension of_______________?

• 1. Force
• 2. Pressure
• 3. Momentum
• 4. Energy

Question: Dimensional analysis is helpful for__________________?

• 1. Deriving a possible formula
• 2. Checking the homogeneity of a physical equation
• 3. Verification of laws
• 4. Only A and B are correct