**481. A man of weight W is standing on an elevator which is ascending with an acceleration a. The apparent weight of the man is_______________?**

A. mg

B. mg – ma

**C. mg + ma**

D. mg – ma

**482. Who discovered the inverse square law for gravity**

A. Einstein

B. Galileo

**C. Newtons**

D. Plank

**483. The planet nearest to the earth is______________?**

**A. Venus**

B. Mercury

C. Uranus

D. Sun

**484. A satellite moving around the earth constitutes______________?**

A. An inertial frame of reference

**B. Non-inertial frame**

C. Neither inertial nor non-inertial

D. Both inertial and non-inertial

**485. Minimum number of communication satellites required to cover the whole earth is______________?**

A. 4

**B. 3**

C. 2

D. 5

**486. A body of 2 kg is suspended from the ceiling of an elevator moving up with an acceleration g. Its apparent weight in the elevator will be______________**

A. 9.8 N

B. 19.6 N

C. 129.4 N

**D. 39.2 N**

**487. If a body of mass 10 kg is allowed to fall freely, its weight becomes______________?**

**A. 0**

B. 89N

C. 9.8 N

D. 10N

**488. How many days would be in a year if the distance between the earth and the sun were reduced to half of its present value (assuming circular orbit) ?**

A. 365 days

B. 730 days

C. 329 days

**D. 129 days**

**489. When a body is moving along a circular path it covers a certain angle in a given interval of time. Such type of motion is__________________?**

A. Vibratory motion

B. Linear motion

C. Rotatory motion

**D. Angular motion**

**490. Coefficient of viscosity of honey is greater than______________?**

A. Milk

B. Water

C. Charcoal

**D. Water**

**NOTE IF YOU THINK ANY OF THE MCQ ABOVE IS WRONG. PLEASE COMMENT WITH CORRECT ANSWER AND ITS DETAIL EXPLANATION IN COMMENT BOX. THANK YOU**