What type of electromagnetic radiation can be used to take photographs in the haze?

• A. Radio waves
• B. infrared rays
• C. Visible light
• D. Gamma rays

f an object whose mass is 3kg moves in a circular path of a radius 0.7m, records a speed at 2m/s. What is the result of the angular velocity?

• A. 4 rads^–1
• B. 1rads^–1
• C. 3rads^–1
• D. 4rads^–1

What type of electromagnetic radiation can be used to take photographs in the haze?

• A. Radio waves
• B. infrared rays
• C. Visible light
• D. Gamma rays

If the mechanical advantage of a machine is 4. What is its ratio for LOAD to EFFORT?

• A. 4:01
• B. 1:04
• C. 5:01
• D. 2:01

In an elastic collision

I. Energy is conserved II. Energy is decreased III. Energy is increased IV. Linear momentum conserved

• A. I only
• B. I and IV only
• C. II only
• D. III only

If a mango fruit dropped at a height of 50 meters. How long does it reach the ground? (take g = 10m/s2)

• A. 2 sec
• B. 3 sec
• C. 4sec
• D. 3.2sec

Boyle’s law may be Written as

• A. P1V1= P2V2
• B. V1 = V2 ÷ T1T2
• C. P1T1 = P2T2
• D. P1V1 ÷ T1 = P1V1 ÷ T2

If a ball released from a height of 20m, How long would it take the ball to reach the ground? (assures g = 10m/s)

• A. 2sec
• B. 3sec
• C. 35sec
• D. 2.4sec

The compressed regions and the space-out regions in longitude wave are refers to as

• A. Compression and Rarefaction
• B. Comparison and Explosion
• C. Reflection only
• D. Refraction only

The optical instrument which is suitable for viewing a nearby objects is ………..?

• A. Telescope
• B. sextant
• C. microscope
• D. periscope